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Avro 504 to 504K (Military)

For description of variants see Production Summary

For a description of the format and data included in Production Tables, see here.

This page covers 504 to 504K Military variants only.
For Civil 504K variants see
Avro 504 to 504K (Civil)



Production List Page Top



Wartime Production - U.K. Built Aircraft

Production List Top Page Top 

Serial Range
C/n
Type
Batch Qty
Conv.
Canc'd
Notes
 12 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester, for the RFC to contract A.2367. Delivered between May and November 1914.
 376, 390, 397, 398,  A.V.R.1-A.V.R.12  504  12      
 637, 638, 652, 665,            
 683, 692, 715, 716            
 1 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract C.P.46635/14 for the RNAS. Delivered November, 1914.
 179    504  1      
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester for the RFC to contract A.2742. Delivered as 44 Type 504 and 6 as Type 504D. Delivered between January and September 1915.
 750 - 793    504  44      753 interned in Holland - see note 16.
 794 - 799    504D  6      
 6 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract C.P.50788/14 for the RNAS. Delivered November to December, 1914
 873 - 878    504  6      
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract C.P.58282/14 for the RNAS. Delivered between December 1914 and August 1915. 10 aircraft transferred to the RFC.
 1001 - 1004    504B  4      1001 interned in Holland - see note 16.
 1005 - 1008      4      Transferred to RFC as 2857 - 2860.
 1009 - 1019      11      
 1020 - 1025      6      Transferred to RFC as 4221 - 4225, 4255.
 1026 - 1050      25      
 10 aircraft built by A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract RNAS C.P.50788/14 transferred to the RFC.
 2857 - 2860        (4)    Ex RNAS 1005 to 1008 March 1915
 4221 - 4225        (5)    Ex RNAS 1020 to 1024
 4255        (1)    Ex RNAS 1025
 50 aircraft ordered from The Brush Electrical Engineering Co. Ltd., Loughborough to contract C.P.32600/15 for the RNAS. Delivered between November 1915 and June 1916.
 1467 - 1496    504C  30      
 3301 - 3320      20      
 50 aircraft ordered from S.E. Saunders, Ltd., East Cowes, Isle of Wight, to contract A.3123 for the RFC. Delivered between January and May 1916.
 2890 - 2939    504A  50      4 aircraft to RNAS - see table .
 50 aircraft ordered from The Bleriot & Spad Aircraft Works, Addlestone, Surrey, to contract A.3229 for the RFC. Delivered between ?? and ?? 1915
 4020 - 4069    504A  50      
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract 94/A/36 for the RFC. Delivered between ?? and  ?? 1915.
 4737 - 4786    504A  50      
 10 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract 87/A/232 for the RFC. Delivered between ?? and  ?? 1916.
 7446 - 7455    504A  10      
 25 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract 87/A/278 for the RFC. Delivered between ?? and  ?? 1916.
 7716 - 7739    504A  24      
 7740      1      Built by S.E. Saunders, Ltd., East Cowes, Isle of Wight.
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract 87/A/387 for the RFC. Delivered between ?? and  ?? 1916.
 7943 - 7992    504A  50      Dual control.
 30 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract C.P.61138/15 for the RNAS as Type 504C. Delivered between October 1915 and August 1916.
 One aircraft converted by A.V. Roe to Type 504F.
 8574 - 8603    504C  30      
     504F    (1)    8603 converted to Type 504F
 10 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester to contract C.P.151922/15 for the RNAS. Delivered between April and May, 1916
 9276 - 9285    504E  10      
 10 aircraft ordered from Parnall & Sons, Eastville, Bristol, (but see note 2) to contracts AS.19203 and C.P.108003/16 for RNAS. Delivered between April and June, 1916
 9821 - 9830    504B  10      
 30 aircraft ordered from Parnall & Sons, Eastville, Bristol to contract AS.19203 & C.P.111730/16  for the RNAS. Delivered between November 1916 and February 1917
 9861 - 9890  P31-P60  504B  30      
 50 aircraft ordered from S.E. Saunders, Ltd., East Cowes, Isle of Wight, to contract 87/A/387 for RFC. Delivered between ?? and ?? 1916.
 A412 - A461    504A  50      Dual control.
 50 aircraft ordered from The Bleriot & Spad Aircraft Works, Addlestone, Surrey, to contract 87/A/387 for RFC. Delivered between ?? and ?? 1916.
 A462 - A511    504A  50      Dual control.
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester,  to contract 87/A/387 for RFC. Delivered between ?? and ?? 1916.
 A512 - A561    504A  50      Dual control.
 50 aircraft ordered from The Bleriot & Spad Aircraft Works, Addlestone, Surrey, to contract 87/A/387 for RFC. Delivered between ?? 1916 and February 1917.
 A1970 - A2019    504A  50      Dual control.
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester,  to contract 87/A/387 for RFC. Delivered between ?? and ?? 1916.
 A2633 - A2682    504A  50      
 50 aircraft ordered from S.E. Saunders, Ltd., East Cowes, Isle of Wight, to contract 87/A/387 for RFC. Delivered between ?? and ?? 1916.
 A3355 - A3404    504A  50      
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester,  to contract 87/A/387 for RFC. Delivered between ?? 1916 and March 1917.
 A5900 - A5949    504A  50      
 100 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester, to contract 87/A/1213 for the RFC. Delivered between February and March 1917.
 A8501 - A8600    504A  100      Dual control A8591 pattern a/c for The Scottish Aviation Factory; refurbished as F9572
 50 aircraft ordered from S.E. Saunders, Ltd., East Cowes, Isle of Wight, to contract 87/A/387 for RFC. Delivered between April And September 1917.
 A9763 - A9812    504A  50      At least 11 believed completed as 504J; see Note 3.
 50 aircraft ordered from The Bleriot & Spad Aircraft Works, Addlestone, Surrey, to contract 87/A/387  for the RFC. Cancelled
 A9922 - A9971    504A      50  
 30 aircraft ordered from The Sunbeam Motor Car Co. Ltd., Wolverhampton, to contracts C.P.120735/16 & C.P.121726/16 for the RNAS. All aircraft delivered as Type 504B between November 1916 and April 1917.
 12 aircraft later converted to Type 504H as shown.
 N5250 - N5279    504B  30      
     504H    (12)    N5256 - N5258, N5261 - N5262, N5264, N5267 - N5271, N5273
 20 aircraft ordered from The Regent Carriage Co. Ltd., Fulham, to contract AS.120731 for the RNAS. Delivered between August 1917 and January 1918
 N5310 - N5329    504G  20      
 30 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contracts C.P.121501/16, C.P.133706/16, & AS.19207 for the RNAS. Delivered between June and October, 1917.
 N5800 - N5829    504G  30      
 20 aircraft ordered from Parnall & Sons, Eastville, Bristol, to contracts C.P.139233/16 & AS.19202 for the RNAS. Delivered between February and March 1917.
 N6010 - N6014  P62-P66  504B  5      
 N6015 - N6029  P67-P81    15      15 transferred to RFC as A9975 - A9977, B382 - B396, B1390, B1391 respectively.
 30 aircraft ordered from The Sunbeam Motor Car Co. Ltd., Wolverhampton, to contract C.P.139209/16 for the RNAS. Delivered between February and July 1917.
 N6130 - N6159    504B  30      
 30 aircraft ordered from Parnall & Sons, Eastville, Bristol, to contract C.P.103733/17 for the RNAS. Delivered between April and July 1917.
 N6650 - N6656  P82-P88  504B  7      7 transferred to RFC as B1392 - B1394, B1397 - B1400.
 N6657 - N6679  P89-P111    23      
 13 aircraft built by Parnall & Sons, Eastville, Bristol, to contracts C.P.139233/16 & AS.19202 transferred to the RFC from the RNAS.
 A9975 - A9977    504B    (3)    Ex RNAS N6015 - N6017
 B382 - B385        (4)    Ex RNAS N6018 - N6021
 B389 - B392        (4)    Ex RNAS N6022 - N6025
 B395 - B396        (2)    Ex RNAS N6026, N6027
 100 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester, to contract 87/A/1213 for the RFC. Delivered between April an July 1917.
 B901 - B1000    504A  100      At least 31 believed completed as 504J; see note 3.
 9 aircraft built by Parnall & Sons, Eastville, Bristol, to contracts C.P.139233/16 & C.P.103733/17, transferred to the RFC from the RNAS.
 B1390 - B1394    504B    (5)    Ex RNAS N6028, N6029, N6650 - N6652
 B1397 - B1400        (4)    Ex RNAS N6653 - N6656
 150 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester, to contract 87/A/1213 for the RFC. Delivered between July and September 1917.
 B3101 - B3250    504J  150  (1)    B3157 converted to 504K prototype [24].
 50 aircraft ordered from The Humber Motor Co. Ltd., Coventry, to contract AS.20354 for the RFC (see note 4). Delivered between October 1917 and January 1918.
 B3251 - B3300    504A  50      41 aircraft to RNAS - see table . B3292 later converted to 504K.
 200 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract AS.13161 for the RFC. Delivered as 100 Type 504J and 100 Type 504A between September
 and November 1917.
 B4201 - B4300    504J  100      
 B4301 - B4400    504A  100      At least 26 believed completed as 504J and a further 10 to have been later converted to 504; see note 3.
             Eleven aircraft to RNAS - see table .
 250 aircraft ordered from Parnall & Sons, Eastville, Bristol, to contract AS.20353 for the RFC. 50 cancelled. Ordered as Type 504A but delivered as 84 Type 504J and 116 Type 504K between November
 1917 and October 1918. Disposition of 504J/504K per Bruce [24].
 B8581 - B8664  P1/1671-P1/1754  504J  84      62 aircraft to RNAS - see table .
 B8665 - B8780  P1/1765-P1/1870  504K  116      
 B8781 - B8830          50  Cancelled and serials reallocated.
 200 aircraft ordered from The Humber Motor Co. Ltd., Coventry, to contract AS.20354 (100 subcontracted on AS.13161) for the RFC. Delivered between October 1917 and January 1918.
 C551 - C750    504A  200      37 believed converted to 504J and 9 to 504K. See note 3. 3 aircraft to RNAS - see table .
 250 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract AS.13161 for the RFC. 200 delivered between November 1917 and January 1918, remainder cancelled.
 C4301 - C4500    504J  200      Some completed as 504K (C4322, C4451, C4477 known). 9 aircraft to RNAS - see table .
             C4312 supplied to British Avn Mission Washington - see table .
             C4329 at some time fitted with floats
 C4501 - C4550          50  Cancelled and serials reallocated.
 300 aircraft ordered from Harland and Wolff, Ltd., Belfast, to contract AS.19062 for the RFC. Delivered between February and November 1918..
 C5751 - C6050    504J  300      At least 26 believed completed as 504K; see Note 3. 7 aircraft to RNAS - see table .
             C5752 - C5754, C5886 - C5889, C5965 supplied to US Air Service - see table .
 200 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract AS.13161 for the RFC. Delivered between January and February 1918.
 D1 - D200    504J  200      Some possibly converted to 504K. 4 aircraft to RNAS - see table .
 50 aircraft ordered from The Eastbourne Aviation Co. Ltd., Eastbourne, to contract AS.18919 for the RFC. Delivered as 24 Type 504A and 26 Type 504K between January and May, 1918.
 Disposition of 504A/504K per Bruce [24].
 D1601 - D1624  201-224  504A  24      All Type 504A to RNAS. D1613 later converted to 504K.
 D1625 - D1650  225-250  504K  26      8 aircraft to RNAS - see table .
 150 aircraft ordered from Frederick Sage & Co. Ltd., Peterborough, to contract AS.32161 for the RFC. Delivered between June and October 1918.
 D1976 - D2125    504K  150      11 aircraft to RNAS - see table .
 200 aircraft ordered from The Sunbeam Motor Car Co. Ltd., Wolverhampton, to contract AS.32163 for the RFC. Delivered as 90 Type 504J and 110 Type 504K between February and August 1918.
 Disposition of 504J/504K per Bruce [24].
 D4361 - D4450    504J  90      11 aircraft to RNAS - see table .
             D4365 supplied to British Avn Mission Washington - see table .
 D4451 - D4560    504K  110      13 aircraft to RNAS - see table .
 100 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract AS.34000 for the RFC. Delivered between March and August 1918.
 D5451 - D5550    504J  100      Delivered as spares for erection in Egypt.
 100 aircraft ordered from Greig & Henderson (The Scottish Aviation Factory), to contract AS.37917 for the RFC. Delivered between June and October 1918.  Disposition between 504J/504K per contracts
 ledger AIR 20/761 as presented in airhistory.org [26]. Specific serial allocation unknown.
 D5851 - D5950    504J  25      
     504K  75      
 50 aircraft ordered from The Humber Motor Co. Ltd., Coventry, to contract AS.20354 for the RFC. Delivered as 21 Type 504A and 29 Type 504K between October 1917 and January 1918.
 Disposition of 504A/504K per Bruce [24] & airhistory.org [26].
 D6201 - D6221    504A  21      At least 5 believed completed as, or later converted to, 504K. See note 3.
             2 aircraft to RNAS - see table .
 D6222 - D6250    504K  29      1 aircraft to RNAS - see table .
 150 aircraft ordered from The Brush Electrical Engineering Co. Ltd., Loughborough, to contract AS.37031 for the RFC. Delivered as 25Type 504J and 125 Type 504K between February and December 1918.
 Disposition of 504J/504K per Bruce [24].
 D6251 - D6275    504J  25      11 aircraft to RNAS - see table .
 D6276 - D6400    504K        2 aircraft to RNAS - see table . D6400 to the AEF - see table .
 150 aircraft ordered from Hewlett & Blondeau, Ltd., Leagrave, Luton, to contract AS.37764 for the RFC. 13 aircraft transferred to the RNAS.
 D7051 - D7200    504K  150      13 aircraft to RNAS - see table .
 300 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract AS.34679 for the RFC. Delivered between March and December 1918.
 D7501 - D7800    504J  300      At least 48 believed completed as 504K, with a further 9, built as 504J, later converted to
             504K; see Notes 3 and 20.
             57 aircraft transferred to the RNAS - see table.
 50 aircraft ordered from A.V. Roe & Co. Ltd., Miles Platting, Manchester, to contract 87/A/1213 for the RFC (see note 4). Delivered between May 1918 and March 1919. 
 D8251 - D8300    504K  50      2 aircraft to RNAS - see table . D8281, D8282 supplied to British Avn Mission Washington
 300 aircraft ordered from The Grahame-White Aviation Co. Ltd., Hendon, London, to contract AS.42212 for the RFC. Delivered between May 1918 and March, 1919.
 D8781 - D9080  G.W.3051-G.W.3350  504K  300      45  purchased by America for the use of the A.E.F. as trainers. See US table.
             26 aircraft to RNAS - see table . For D8971, see note 5.
 100 aircraft ordered from Parnall & Sons, Eastville, Bristol, to contract AS.41535 for the RFC. Delivered between May and July 1918.
 D9281 - D9380  P1/???-P1/???  504K  100      6 purchased by America for the use of the A.E.F. as trainers. See table
 300 aircraft ordered from Harland and Wolff, Ltd., Belfast, to contract AS.4291 for the RFC. 150 delivered between October 1918 and March, 1919, the remainder cancelled.
 E301 - E450    504K  150      
 E451 - E600          150  
 300 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract AS.42582. Delivered between June 1918 and January 1919.
 E1601 - E1900    504K  300      24 aircraft to RNAS - see table .
 150 aircraft ordered from Morgan & Co. Leighton Buzzard, to contract 35A/49/C29. Delivered between June 1918 and January 1919.
 E2901 - E3050    504K  150      15 aircraft to RNAS - see table .
 100 aircraft ordered from Savages Ltd., Kings Lynn, Norfolk, to contract 35A/34/C18. Delivered between July 1918 and February 1919.
 E3051 - E3150    504K  100      13 aircraft to RNAS - see table .
 150 aircraft ordered from Parnall & Sons, Eastville, Bristol, to contract 35A/228/C138. Delivered between July and October 1918.
 E3254 - E3403  P1/8000-P1/8149(1)  504K  150      8 aircraft to RNAS - see table .
 500 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract 35A/226/C140. 449 aircraft delivered between July 1918 and June 1919, the remainder cancelled.
 E3404 - E3852    504K  449      25 aircraft to RNAS - see table . E3415, E3417 - E3420 supplied to French Govt.
             E3625 purchased by America for the use of the A.E.F. as trainers. See table
 E3853 - E3903          51  
 200 aircraft ordered from The Humber Motor Co. Ltd., Coventry, to contract 35A/225/C139. Delivered between July and November, 1918.
 E4104 - E4303    504K  200      10 aircraft to RNAS - see table .
 50 aircraft ordered from The Eastbourne Aviation Co. Ltd., Eastbourne, to contract 35A/191/C80. Delivered between June and September 1918.
 E4324 - E4373  324-373  504K  50      1 aircraft to RNAS - see table .
 50 aircraft ordered from Morgan & Co. Leighton Buzzard, to contract 35A/49/C29. Delivered between November 1918 and January 1919.
 E6737 - E6786    504K  50      
 300 aircraft ordered from The Grahame-White Aviation Co. Ltd., Hendon, London, to contract 35A/402/C282. Delivered between October 1918 and February 1919.
 E9207 - E9506    504K  300      11 aircraft to RNAS - see table .
 100 aircraft ordered from The Brush Electrical Engineering Co. Ltd., Loughborough, to contract 35A/830/C689. Delivered between August and November 1918.
 F2233 - F2332    504K  100      9 aircraft to RNAS - see table .
 100 aircraft ordered from The Sunbeam Motor Car Co. Ltd., Wolverhampton, to contract 35A/829/C688. Delivered between August and November 1918.
 F2533 - F2632    504K  100      
 150 aircraft ordered from Parnall & Sons, Eastville, Bristol, to contract 35A/1761/C1880. Delivered between October 1918 and April 1919.
 F8696 - F8845    504K  150      4 aircraft to RNAS - see table .
 100 aircraft ordered from Frederick Sage & Co. Ltd., Peterborough, to contract 35A/1758/C1882. Delivered between October 1918 and January 1919.
 F8846 - F8945    504K  100      1 aircraft to RNAS - see table .
 50 aircraft ordered from The Eastbourne Aviation Co. Ltd., Eastbourne, to contract 35A/1684/C1793. Delivered between October 1918 and January 1919.
 F9696 - F9745    504K  50      
 100 aircraft ordered from Hewlett & Blondeau, Ltd., Leagrave, Luton, to contract 35A/1675/C1792. Delivered between September and December 1918.
 F9746 - F9845    504K  100      1 aircraft to RNAS - see table .
 150 aircraft ordered from Greig & Henderson (The Scottish Aviation Factory), to contract 35A/2055/C2333. 105 aircraft delivered between October 1918 and January 1919, the remainder cancelled.
 H201 - H305    504K  105      2 aircraft to RNAS - see table .
 H306- H350          45  
 250 aircraft ordered from The Sunbeam Motor Car Co. Ltd., Wolverhampton, to contract 35A/2031/C2313. 181 aircraft delivered between November 1918 and June 1919, the remainder cancelled.
 H1896 - H2076    504K  181      4 aircraft to RNAS - see table .
 H2077 - H2145          69  
 500 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract 35A/2052/C2330. 480 aircraft delivered to the RFC between October 1918 and July 1919, the
 remainder cancelled.
 H2146 - H2619    504K  474      16 aircraft to RNAS - see table .
 H2620 - H2625            
 H2626 - H2645          20  
 250 aircraft ordered from The Brush Electrical Engineering Co. Ltd., Loughborough, to contract 35A/2049/C2327. 160 aircraft delivered between November 1918 and September 1919, the remainder cancelled.
 H2946 - H3105    504K  160      10 aircraft to RNAS - see table .
 H3106 - H3195          90  
 100 aircraft ordered from The London Aircraft Co. Ltd., Clapton, London, to contract 35A/2050/C2328. 66 aircraft delivered between November 1918, and July 1919, the remainder cancelled.
 H5140 - H5205    504K  66      
 H5206 - H5239          34  
 50 aircraft ordered from The Eastbourne Aviation Co. Ltd., Eastbourne, to contract 35A/2054/C2332.  22 aircraft delivered between February and April 19919, the remainder cancelled
 H5240 - H5261    504K  22      
 H5262- H5289          28  
 300 aircraft ordered from The Humber Motor Co. Ltd., Coventry, to contract 35A/2053/C2331. 120 aircraft delivered between November 1918 and August 1919, the remainder cancelled.
 H6543 - H6662    504K  120      4 aircraft to RNAS - see table .
 H6663 - H6842          180  
 150 aircraft ordered from Hewlett & Blondeau, Ltd., Leagrave, Luton, to contract 35A/2724/C3036. Delivered between December 1918 and June 1919.
 H7413 - H7562    504K  150      
 300 aircraft ordered from The Grahame-White Aviation Co. Ltd., Hendon, London, to contract 35A/2051/C2329. Delivered between February and September 1919.
 H9513 - H9812    504K  300      H9771 - H9812 delivered as salvage. H9645, H9772, H9774, H9777, H9778, H9786,
             H9793, H9794, H9795, H9799, H9802, H9807 to ADC.
 100 aircraft ordered from Frederick Sage & Co. Ltd., Peterborough, to contract 35A/2962/C3390. 60 aircraft delivered between January and May 1919, the remainder cancelled.
 H9813 - H9872    504K  60      
 H9873 - H9912          40  
 500 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester and Hamble, Hants, to contract 35A/3268/C3791. 293 aircraft delivered between May and August 1919, the remainder cancelled.
 J731 - J1023    504K  293      J764 - J1023 to store except J803, J833, J835, J869, J875, J1015
             J733, J750 completed as Type 504N. J908 - J1230 (323 aircraft) repurchaced by Avro.
 J1024 - J1230          207  
 100 aircraft ordered from Greig & Henderson (The Scottish Aviation Factory), to contracts 35A/3349/C3910 and AS.44997. Cancelled
 J2142 - J2241    504K      100  
 500 aircraft ordered from The Grahame-White Aviation Co. Ltd., Hendon, London, to contract 35A/23446/C4055 Cancelled - contract and serials changed to Sopwith Snipe
 J2542 - J3041    504K      500  
 100 aircraft ordered from Hewlett & Blondeau, Ltd., Leagrave, Luton, to contracts 35A/3477/C4079 and AS.35431. Cancelled
 J3992 - J4091    504K      100  
 100 aircraft ordered from Frederick Sage & Co. Ltd., Peterborough, to contracts 35A/3476/C4078 and AS.25430. Cancelled
 J5092 - J5191    504K      100  
 100 aircraft ordered from Savages Ltd., Kings Lynn, Norfolk, to contract 35A/3602/C4198. 11 aircraft delivered between February and April 1919, the remainder cancelled.
 J5492 - J5501    504K  10      
 J5502 - J5511          10  
 J5512      1      
 J5513 - J5591          79  
 
Total Production
 8879 
 (14) 
 1953 
 

RFC Aircraft Transferred to RNAS; Retained RFC Serials

Production List Top Page Top 

Type
Qty
Serials
504A
4
 2929, 2930, 2933 and 2934.
504A
41
 B3251 - B3275, B3278 - B3293.
504A
11
 B4309 - B4317, B4338, B4339, B4361 - B4363, B4373.
504J
62
 B8581 - B8590, B8596 - B8603, B8616 - B8660.
504A
3
 C721, C722 & C725.
504J
9
 C4322, C4361 - C4363, C4373, C4383, C4393, C4403, C4413.
504J
7
 C5801, C5803, C5807, C5809, C5811, C5843, C5844.
504J
4
 D30,D162, D163, D186.
504A
25
 D1601 - D1625
504K
8
 D1626, D1627, D1629, D1631, D1641, D1646 - D1648
504K
11
 D1998, D2000 - D2002, D2009, D2021, D2026, D2027, D2031, D2069, D2110.
504J
11
 D4361, D4367, D4393, D4414 - D4417, D4445 - D4447, D4450.
504K
13
 D4454, D4490, D4493, D4494, D4496 - D4501, D4503 - D4505.
504A
2
 D6210, D6216.
504K
1
 D6235.
504J
11
 D6251 - D6260, D6270.
504K
2
 D6334, D6352.
504K
13
 D7073, D7086, D7089, D7091 - D7093, D7096 - D7099, D7189, D7197, D7199.
504J/K
57
 D7511 - D7516, D7527 - D7530, D7533, D7536, D7539, D7541 - D7550, D7574, D7575, D7581, D7582, D7588, D7589, D7595,
     D7596, D7617, D7636, D7643, D7651, D7656 - D7600,  D7664, D7676 - D7680, D7707 - D7710, D7726 - D7730, D7756.
504K
2
 D8253, D8285.
504K
26
 D8797, D8840, D8844, D8851, D8861, D8901, D8908 - D8921, D8923, D8937, D8944, D8980 - D8982.
504K
24
 E1611 - E1616, E1620, E1624, E1625, E1627, E1628, E1672, E1675, E1678, E1698 - E1700, E1712, E1795, E1798 - E1800,
     E1806, E1860.
504K
15
 E2910, E2924, E2927 - EE2929, E2969, E3005 - E3007, E3010, E3027, E3037, E3038, E3041.
504K
13
 E3057 - E3060, E3062, E3063, E3070, E3104, E3109, E3121, E3123, E3126, E3135, E3140.
504K
8
 E3390 - E3397.
504K
25
 E3404 - E3409, E3521, E3531, E3548, E3582, E3583, E3621 - E3624, E3627 - E3630, E3632, E3797, E3800, E3808
504K
10
 E4144, E4232, E4285 - E4287, E4292, E4293, E4296 - E4298.
504K
1
 E4332.
504K
11
 E9254 - E9257, E9288, E9293, E9295, E9317, E9323, E9326, E9334.
504K
9
 F2234, F2241, F2242, F2270, F2309 - F2312, F2314.
504K
4
 F8754, F8758 - F8760.
504K
1
 F8881.
504K
1
 F9782.
504K
2
 H226, H246.
504K
4
 H1917, H1918, H1922, H1932
504K
16
 H2160, H2161, H2165, H2167 - H2169, H2235, H2296 - H2300, H2311, H2314, H2391, H2537
504K
10
 H3001 - H3003, H3005 - H3010, H3023*
504K
4
 H6543, H6545, H6550, H6586.
Total Transferred    (481)

* Given as H3123 by Sturtivant and Page [4], but this was a cancelled aircraft.

Type 504 Shipped or Transferred to United States or US Forces.

Production List Top Page Top 

Notes
  One aircraft delivered to the US as part of Lady Drogheda's fund raising exhibition in December 1917.
 Type 504B 1014
 Two demonstration 504Js shipped on 2 January 1918 on the S.S. Tuscania, for Lt. Col. Lee of the British Mission, Washington.
 C4312, ??. C4312 was tested at McCook Field, Dayton, Ohio in early 1918 and given McCook Field number P-25.
 52 Le Rhône-powered 504Ks were purchased by the US In July 1918 for the use of the A.E.F. as trainers. Some were used at the A.E.F. 3rd Instruction
 Centre, Issoudun, France.
 D9026 - D9057, D9060 - D9063, D9066, D9067, D9069 - D9075, D9313 - D9318, D9320, E3625. See note 14.
 8 504Js purchased from the British War Mission to Order  No. 7211036 dated 21 January 1919.
 C5753, C5865, C5886, C5887, C5888, C5889, D4365 plus one. See note15.

Aircraft Built From Spares/Salvage, Rebuilt or Refurbished

Production List Top Page Top 

Serial Range
Type
Notes
 A8966  504J(?)  By 21st Wing Aircraft Repair Station, to contract 87/A/1923.
 B7759  504J(?)  By 1 SARD from salvage.
 B7961  504J(?)  By 1 SARD from salvage.
 B8792  504J  By 23rd Wing Aircraft Repair Station, February 1918, to contract 87/A/86.
 B8796 - B8797  504J  By 26th Wing Aircraft Repair Station, February 1918, to contract 87/A/86.
 B8814  504J  By 23rd Wing Aircraft Repair Station, February 1918, to contract 87/A/86.
 B8818  504J  By 18th Wing Aircraft Repair Station, February 1918, to contract 87/A/86.
 B8819  504J  By No.7 Training Depot Station, February 1918, to contract 87/A/86.
 B8997  504J(?)  By No3 (Western) Aircraft Repair Depot, Yate.
 B9452  504A  By 19th Wing Aircraft Repair Station, August 1917, to contract 87/A/86.
 B9901  504J(?)  By 18th Wing Aircraft Repair Station, October 1917.
 B9932  504J  By 6th Wing Aircraft Repair Station, October 1917, to contract 87/A/86.
 B9939  504J(?)  By 7th Wing Aircraft Repair Station, October 1917, to contract 87/A/86.
 B9958  504J  By 6th Wing Aircraft Repair Station, November 1917, to contract 87/A/86.
 B9959  504J  By 6th Wing Aircraft Repair Station, November 1917, to contract 87/A/86.
 B9995  504J(?)  By 6th Wing Aircraft Repair Station, November 1917, to contract 87/A/86.
 C3505  504J(?)  By 6th Wing Aircraft Repair Station, January 1918, to contract 87/A/86.
 C4290  504J  By 7th Wing Aircraft Repair Station, January 1918, to contract 87/A/86.
 C4299  504J  By 7th Wing Aircraft Repair Station, January 1918, to contract 87/A/86.
 C4549  504J(?)  By 18th Wing Aircraft Repair Station, December 1912, to contract 87/A/86.
 C8652  504J(?)  By 18th Wing Aircraft Repair Station, December 1912, to contract 87/A/86.
 C9986  504J(?)  By No.7 Training Depot Station, Feltwell, March 1918, to contract 87/A/86.
 C9998 - C9999  504J(?)  By 39th Wing Aircraft Repair Station, Feltwell, April 1918, to contract 87/A/86.
 E9984  504J  By 23rd Wing Aircraft Repair Station from spares, April 1918, to contract 87/A/86.
 E9989  504K(?)  By 6th Wing Aircraft Repair Station, to contract 87/A/86.
 E9991 - E9994  504K(?)  By 23rd Wing Aircraft Repair Station from spares, to contract 87/A/86.
 E9995  504K(?)  By 23rd Wing Aircraft Repair Station from spares, to contract 87/A/86.
 E9999  504K(?)  By 17th Wing Beaulieu from spares, to contract 87/A/86.
 F2188  504J  By Aircraft Repair Station Carlton, May 1918, to contract 87/A/86.
 F2209  504J  By 23rd Wing Aircraft Repair Station, May 1918, to contract 87/A/86.
 F2231  504K  By Aircraft Repair Stations Hounslow, May 1918, to contract 87/A/86.
 F2232  504K  By Aircraft Repair Stations Dover, May 1918, to contract 87/A/86.
 F4171  504K  By Aircraft Repair Station Dover, May 1918, to contract 87/A/86.
 F4172  504K  By Aircraft Repair Station Chattis Hill, May 1918, to contract 87/A/86.
 F4173  504K  By Aircraft Repair Station Hounslow, May 1918, to contract 87/A/86.
 F4174  504K  By Aircraft Repair Stations Dover, May 1918, to contract 87/A/86.
 F4217  504K  By 207 Training Depot Station, Chingford, June 1918, against contract 49327/18.
 F5799 - F5800  504J  By 23rd Wing Aircraft Repair Station, June 1918, against contract D3258.
 F9504 - F9507  504K  By No5 (Eastern) Aircraft Repair Depot, Henlow, July 1918.
 F9546 - F9547  504K  By Aircraft Repair Station Carlton, July 1918.
 F9572  504A  A8591 refurbished & renumbered.
 F9625  504K  By 6th Wing Aircraft Repair Station, September 1918, against contract D6410.
 F9633  504K  By 43 Training Depot Station, September 1918, against contract D7618.
 F9636  504K  By 58th Wing Aircraft Repair Station, September 1918, against contract D6410.
 H8254 - H8255  504K  By 58th Wing Aircraft Repair Station, October 1918, against contract D6410.
 H8257  504K  By 42 Training Squadron, October 1918, against contract D5738.
 H8289 - H8290  504K  By No.7 Training Depot Station, Feltwell, October 1918, against contract D6410.
Total (57)



Type 504K Post War Production - U.K. Built Aircraft

Production List Top Page Top 

Serial Range
C/n
Batch Qty
Conv.
Canc'd
Notes
 1 aircraft built from spares at RAF Halton on contract 35557/21 to Spec 29/22.
 J6896      (1)    Built from parts of H2976 & H6593.
 2 aircraft acquired from Sperry Gyroscope Co., New York, USA, in August, 1924, for auto-control experiments.
 J7555 - J7556      (2)    Ex A101 & A102
 1 aircraft ordered to contract 667589/26
 J8029      (1)    F9723 re-built
 50 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, on contract 707157/26 to meet Specification 15/26. Per Bruce [24], almost certainly built from spares.
 J8331 - J8380      (50)    
 
Total Production
 
(54)
 
 



Post War Production - Ex-RAF Avro 504K (except as noted) Rebuilt For Military Export

Production List Top Page Top 

(In alphabetical order by country) (See Note 27)
Serial Range
C/n
Qty
Notes
Afghanistan
 2 aircraft supplied by the M.C. Aviation Syndicate, Karachi, India to the Afghan Government. Delivered in December 1924, plus one presented privately to the Afghan Government.
     (2)  Probably from Imperia Gift to India.
Argentina
 22 aircraft supplied by the Handley Page Ltd/Aircraft Disposal Co Ltd to the Argentine Military Aviation School (Escuela Militar de Aviacion (EMA)).
 1 - 22    (22)  See Note 8.
Australia
 20 aircraft supplied ex RAF stocks to Australia. Delivered on SS Berrima, arrived Melbourne February 1919. See also Imperial Gifts table and Note 18.
 A3-1 - A3-9    (9)  Ex H2171 - H2180. H2180 crashed 12/06/19 at Melton Vic. and never allocated an A3 number.
 A3-27 - A3-33    (7)  Ex E3741 - E3750. E3741, E3747 and E3748 crashed and never allocated an A3 number.
Belgium
 12 aircraft supplied by Vickers Ltd to contract No. 45/21 for the Belgian Military Air Arm (Aviation Militaire). Delivered 1921.
 A-1 - A-6    (6)  Prepared by A.V.Roe and flown out with Belgian civil markings - see Ferry Registration table.
 A-7 - A-12  5011-5016  (6)  Ex Avro Transport Company aircraft prepared by A.V. Roe & Co. Ltd., Hamble, Hants. See note 11.
   38 aircraft supplied by the Aircraft Disposal Co Ltd  for the Belgian Military Air Arm (Aviation Militaire). Delivered between 1921 and 1924.
 A-13 - A-50    (38)  Prepared by ADC; see civilian Ferry Registrations table for some origins. See note 11.
Brazil
 17 aircraft supplied to the Brazilian Naval Air Service (Aviacao Naval). Delivered 1921. In 1924, the four remaining aircraft were re-registered 411 to 414.
 A1 - A17    (17)  Ex ??, H2024, H2026, H7479, ??, H9608, H2568, H9660, H7473, J5496, E9463, H9618, E4136, H2504, E446, H2566, H9591
       See Note 9.
Chile
 2 aircraft supplied to the Chilean Military Aviation Service (Servicio de Aviación Militar de Chile) as compensation for the Royal Navy taking over 2 Chilean warships. Delivered 1919.
 C-100 - C-101    (2)  
   6 reconditioned aircraft supplied to the Chilean Military Aviation Service (Servicio de Aviación Militar de Chile). Delivered in 1919. 
     (6)  See note 10
   At least 9 reconditioned aircraft supplied to the Chilean Military Aviation Service (Servicio de Aviación Militar de Chile). Delivered September 1921. 
     (9)  See note 10
China
 18 aircraft supplied by Vickers. Ltd. to the Chinese Government. Delivered 1920. See Note 24.
     (18)  Ex E366, E368, E370, E373, E376, E377, E379, E380, E393, E397, E400, E409, E421, E9484, E9486, E9489, E9504, H9579
Denmark
 6 aircraft supplied by the Aircraft Disposal Co Ltd for the Danish Naval Air Service (Danske Marinens Flyvevaesen). Delivered December, 1920.
 101 - 106    (6)  Designated LB-1 in DMF service. Ex H2217, H2472, H2021, H2023, H2430, H2027 respectively.
   3 aircraft for the Danish Army Flying Service (Danske Hærens Flyvertjeneste). Ex Danish civil aircraft, delivered between December 1921 and March 1922.
 Avro.1, Avro.2, Avro.3    (3)  Ex H2556, H2549, H2545
   2 aircraft supplied by A.V. Roe & Co. Ltd., Hamble, Hants, for the Danish Army Flying Corps (Danske Hærens Flyverkorpset). Delivered 1923.
 Avro.1, Avro.2    (2)  
Estonia
 9 aircraft ordered for the Estonia Aviation Regiment (Lennuvae Rugement). Delivered in 1919.
 12, 14, 15, 18 - 23    (9)  Ex ??, E9481, E9467, E3145, E9474, E9495, E9493, E9488 and E9494 consecutively.
   4 aircraft acquired by the Estonia Aviation Regiment (Lennuvae Rugement), source unknown. Delivered in 1924.
 72 - 75    (4)  
Finland
 1 aircraft supplied by the Aircraft Disposal Co Ltd to the Finnish Air Force (Suomen Ilmavoimat). Delivered in September 1926.
 AV-57    (1)  Ex G-EBNU. Originally given serial 1H-49.
Greece
 At least 14 aircraft supplied to the Hellenic Naval Air Service (Anexartita Ellinika Naftika Smini).
     (14)  Ex H3048, H3049, H3052 - H3055, H9687, H9716, H9725, H9730, H9734, H9746. See note 11.
Guatemala
 2 aircraft supplied by Handley Page Ltd to the Guatemalan Air Force (Fuerza Aerea Guatemalteca). Delivered February 1921.
 3, 4    (2)  
Ireland
 5 aircraft supplied by the Aircraft Disposal Co Ltd to the Irish Army Air Corps. Delivered between August 1922 and February 1923.
 I - V    (5)  Ex H2074, H2073, H2075, E359, H2505.
   1 aircraft supplied by the Central Aircraft Co. to the Irish Army Air Corps. Delivered in June 1923.
 VI    (1)  Ex G-EADQ (Ex D7588)
Japan
 20 aircraft supplied by the U.K. Government to the Japanese Naval Air Service. Delivered 1921.
 ???    (20)  See notes 6 and 13.
   48 aircraft supplied by A.V. Roe to the Japanese Army. Delivered 1921.
 ???    (48)  See notes 6 and 13. See civilian ferry registration list for origins.
Latvia
 2 aircraft supplied by the Aircraft Disposal Co Ltd to the Latvijas Aviācijas Nodaļa (Latvian Aviation Division). Delivered October 1926.
 36, 37    (2)  
Mexico
 1 aircraft supplied by A.V. Roe & Co. Ltd., Hamble, Hants, supplied to the Mexican Air Force.
     (1)  One aircraft ex E9441. See note 28.
Netherlands East Indies
 36 aircraft supplied by Vickers Ltd., to the Royal Netherlands East Indies Aviation Service (Luchtvaartafdeling van het Koninklijk Nederlands-Indisch Leger, LA-KNIL). 12 aircraft
 delivered to contract 269/19 in May, 1919, 12 aircraft to contract 453/19 in December, 1919, and 12 aircraft to contract 640/22 in 1922.
 A-21 - A-56 (See Note 17)    (36)  Ex H2500, H2073, H2075, E359, H2205 + others. See note 11.
New Zealand
 4 aircraft for the New Zealand Permanent Air Force,  ex Canterbury Aviation Company. Delivered June 1923. See Note 12.
     (4)  
   6 aircraft for the New Zealand Permanent Air Force, erected from Avro supplied airframes at Wigram Air Base, Christchurch, New Zealand. Delivered August 1925.
 201 - 206  A.201-A.206  (6)  
Norway
 2 Type 504A supplied to the Norwegian Army Air School (Norske Hærens Flyveskole). Delivered February 1918.
 101  49 (See note 26)  (1)  Ex B4305; originally Norwegian Army No.F1 before becoming Army Air Service No. 101 in September 1918
 103  38 (See note 26)  (1)  Ex B4306; originally Norwegian Army No.F7 before becoming Army Air Service No. 103 in September 1918
   3 aircraft, most likely supplied by thethe Aircraft Disposal Co Ltd, to the Norwegian Army Air Service (Norske Hærens Flyvevaaben). Delivered November 1920. See note 23.
 103, 105, 107    (3)  
Peru
 12 aircraft supplied by Vickers for Peruvian Army Aviation Service (Servicio de Aviacion Militar del Ejercito del Peru) to contract 275/20 delivered in 1920, contract 34/21 delivered in
 1921 and contract C.137/22/160, delivery completed by August, 1922.
 1, 2 + others    (12)  Ex E372, E391, E395, E399 + others (See note 11)
Poland
 1 aircraft captured  by Poland from the Soviets in 1920.
     (1)  
Portugal
 30 aircraft supplied by Vickers for Portuguese Army Air Service (Arma da Aeronáutica Militar) to contract C1113/23. See note 30. All aircraft delivered by May, 1924.
 1 - 30  See notes column  (30)  C/ns R3/LE/12065, '184, '082, '167, '099, '150, '235, '201, '320, '218, '116, '133, '286, '269, '303, '252, '337, '354, '371, '388, '405,
       '422, '439, '541, '473, '490, '507, '524, '456, '558. See note 30.
Russia (White Russia)
 30 aircraft supplied to the Anti Bolshevik Govt (White Russian) forces. Taken on charge February-March 1920.
     (30)  See note 29.
Spain
 48 aircraft supplied to the Spanish Military Air Service (Servicio de Aviación Militar). Delivered between 1919 and 192(?).
 1 - 48    (48)  See note 21
   19 aircraft supplied to the Spanish Naval Air Service (Servico de Aeronautica Naval). Delivered between 1921 and 1922.
 See Note 22    (19)  
   4 aircraft supplied by the Aircraft Disposal Co Ltd to the Spanish Royal Naval Air Service (Aeronautica Naval). Delivered 1925.
 See Note 22    (4)  Ex E434, E445, E450, H2057.
Sweden
 2 aircraft supplied by A.V. Roe & Co. Ltd., Newton Heath, Manchester, to the Swedish Navy Air Service (Svenska Flygvasende). Delivered 1923. See Note 25.
 6 - 7  R3/CL/10671, R3/CL/10688  (2)  Allocated new serials 26, 27 (later 072, 073). Redesignated Sk3 on 1 July 1928.
Switzerland
 An unknown number of aircraft were supplied to the Swiss Army Aviation service. No further details known.
     ??  
Uruguay
 17 aircraft supplied to the Uruguayan Military Aviation Academy (Escuela de Aviación Militar). Delivered between 1919 and 1921.
 1 - 17    (17)  
USSR
 8 aircraft captured from the anti-Bolshevik forces and transferred to the RKKVF (Raboche-Krestjanskaya Krasny Aviatsionnij Flot, Red Air Fleet of Workers and Farmers).
 2280, 3707, 3710, 9747, 9749,    (8)  Ex H2280, E3707, H9747, H9749, H9756 - H9758
 9756 - 9758      
   10 aircraft supplied to the RKKVF (Raboche-Krestjanskaya Krasny Aviatsionnij Flot, Red Air Fleet of Workers and Farmers) in 1922.
 2055, 5498, 6646, 7479, 9479,    (10)  Ex H2055, J5498, H6646, H7479, E9479, E9501, H9571, H9605 and H9610, unloaded from the SS Miranda at Leningrad in May 1922.
 9501, 9571, 9589, 9605, 9610      
 
Total 504A
(2)
 
 
Total 504K
(490+)
 

Imperial Gifts to Empire Air Forces. Delivered 1920
Serial Range or
Registration
Notes
Australia (See Note 18)
Total   (36)   Delivered as 34 Type 504K and 2 Type 504L. See also Military Exports table.
 A3-10 - A3-26  Ex H3022 - H3024, H3030 - H3033, H3036 - H3040, H3041, H3043, H3045 - H3047.
 A3-34 - A3-45  Ex H9828, H9834 - H9844.
 A3-46 - A3-47  504L Seaplane, ex H3034, H3042. A3-46 converted to landplane July 1925.
 not allocated  Ex H2180, H3021, H3025, H3035, H3044 crashed and never allocated an A3 number.
Canada
Total   (62) 
(All aircraft initially carried civilian style markings)
 G-CYAA  Ex H9622
 G-CYAC  Ex E362
 G-CYAI  Ex E363
 G-CYAL  Ex H1917
 G-CYAM  Ex H9738. Reconstructed by Canadian Vickers Ltd with new c/n C.V.16.
 G-CYAP  Ex H2043. Converted to 504N as RCAF 44.
 G-CYAQ  Ex H2048. Converted to 504N as RCAF 2.
 G-CYAR  Ex H7461. Converted to 504N as RCAF 1.
 G-CYAS  Ex H2044
 G-CYAT  Ex H9627. Converted to 504N as RCAF 45.
 G-CYAU  Ex H9629. Reconstructed by Canadian Vickers Ltd with new c/n C.V.15. Converted to 504N as RCAF 46.
 G-CYAV  Ex H9626. Reconstructed by Canadian Vickers Ltd with new c/n C.V.19. Converted to 504N as RCAF 50.
 G-CYAW  Ex H9628
 G-CYAX  Ex H2041. Converted to 504L, later 504N as RCAF 14.
 G-CYBD  Ex H9744
 G-CYBG  Ex H9672
 G-CYBH  Ex H9624
 G-CYBK  Ex H9715
 G-CYBL  Ex H9625. Converted to 504N as RCAF 53.
 G-CYBM  Ex H9670. Converted to 504N as RCAF 52.
 G-CYBR  Ex H9745
 G-CYBS  Ex H9740
 G-CYBZ  Ex H9742
 G-CYCA  Ex H9690
 G-CYCB  Ex H9737
 G-CYCD  Ex H9669. Converted to 504N as RCAF 51.
 G-CYCH  Ex H9714
 G-CYCI  Ex H9736
 G-CYCJ  Ex H9732
 G-CYCK  Ex H9717. See noote 26.
 G-CYCL  Ex H9739
 G-CYCM  Ex H9741. Reconstructed by Canadian Vickers Ltd with new c/n C.V.17.
 G-CYCR  Ex H9671
 G-CYCS  Ex H9621
 G-CYCT  Ex H9668
 G-CYCU  Ex H9665
 G-CYCX  Ex H2049. Converted to 504N as RCAF 3.
 G-CYCY  Ex H2046. Converted to 504L
 G-CYCZ  Ex H9630. Reconstructed by Canadian Vickers Ltd with new c/n C.V.18.
 G-CYDA  Ex H2045. Converted to 504L, later 504N as RCAF 13.
 G-CYEE  Ex E361. Converted to 504L
 G-CYEG  Ex H9729. Converted to 504L
 G-CYEH  Ex H9727. Converted to 504N as RCAF 54.
 G-CYEI  Ex H9666. Converted to 504N as RCAF 4.
 G-CYFE  Ex H7462
 G-CYFF  Ex H9558. Converted to 504N as RCAF 15.
 G-CYFG  Ex H9555. Converted to 504N as RCAF 5.
 G-CYFH  Ex H9722. Converted to 504N as RCAF 6.
 G-CYFI  Ex H2047
 G-CYFJ  Ex H9553. Converted to 504N as RCAF 7.
 G-CYFK  Ex H9743
 G-CYFL  Ex H9735. Converted to 504N as RCAF 47.
 G-CYFM  Ex H9631
 G-CYFN  Ex H9632. Converted to 504N as RCAF 48.
 G-CYFO  Ex H9556
 G-CYHA  Ex H2042
 G-CYHC  Ex H9623. Converted to 504N as RCAF 49.
 G-CYHD  Ex H9633
   Ex H9552. Held as spares for Air Board in 1920s, not taken on strength, never received Canadian registration or serial number.
   Ex H9554. Held as spares for Air Board in 1920s, not taken on strength, never received Canadian registration or serial number.
   Ex H9557. Held as spares for Air Board in 1920s, not taken on strength, never received Canadian registration or serial number.
   Ex H9733. Held as spares for Air Board in 1920s, not taken on strength, never received Canadian registration or serial number.
India
Total   (40) 
   D7185, D9059, D9064, D9065, E3046, E3701 - E3703, E3706, E9382, E9400 - E9405, F8824, F8826, F8829, F8831, H1934, H1936, H2146, H2153, H2155, H2546 - H2548,
   H2621 - H2625 (but see note 19), H3078 - H3080, H7495, H7496, H9704, H9705. These were dispositioned as follows:
   20 to Royal Air Force. Based Lahore.
   6 to the Foreign & Political Dept for political purposes. Four later given to individuals.
   1 (F8824) to Bharatpur State, used to start Bharatpur Aviation Academy.
   1 to Indore State.
   3 to Handley Page IBT. One crashed, remaining 2 later transferred to G. McKenzie and later to Capt Murphy.
   1 to Capt Murphy. In addition, two from Handley Page. Started MC Aviation Syndicate with Capt Connelly. Two Subsequently sold to Afghanistan.
   1 to Mr Holoway.
   1 to Sam Brounes Ltd.
   1 to Major Wills. Presumably became G-IAAF.
   1 to Major Duguid.
   1 to Capt D'Arcy.
   1 to Major B.F. Wates. Presumably became G-IAAP.
   2 to Chief Inspector of Aircraft. For investigations into conditions affecting aviation in India.
New Zealand (Note 12)
Total   (21) 
   Ex E3137. To the NZPAF June 1923.
 G-NZAN  Ex E3142. To NZ Aero Transport Co Ltd, Timaru. Fate unknown.
 G-NZAP  Ex E9424. To NZ Aero Transport Co Ltd, Timaru.
 G-NZAR  Ex E9427. To NZ Aero Transport Co Ltd, Timar. May have been cabin conversion after a crash.
   Ex E9429. To NZ Aero Transport Co. Ltd, Timaru.  Destroyed prior to June 1923.
 G-NZAF  Ex E9432. 110 h.p. Le Rhône. To Canterbury (NZ) Aviation Co Ltd "High Jinks". Transferred to NZPAF June 3 as E9432.
   Ex F9745. To NZ Flying School, Kohimarama. F/f 29.8.20 as 3-seater.
 G-NZAG  Ex H1952. To Canterbury (NZ) Aviation Co Ltd. See note 12
   Ex H1958. To Canterbury (NZ) Aviation Co Ltd, destroyed prior to June 1923.
 G-NZAL  Ex H1964. 110 h.p. Le Rhône. To Canterbury (NZ) Aviation Co Ltd. Transferred to NZPAF June 3 as H1964.
   Ex H1965. To the NZPAF June 1923.
   Ex H1966. To NZ Aero Transport Co Ltd, Timaru. Dual control model. Transferred to NZPAF as H1966.
   Ex H1968. To Canterbury (NZ) Aviation Co Ltd. Believed to have been destroyed by gale at Pahiatua 21.10.21.
   Ex H1970. To to Canterbury (NZ) Aviation Co Ltd, destroyed prior to June 1923.
 G-NZAJ  Ex H2986. To NZ Flying School, Kohimarama  as "M"; converted to 504L. Crashed at Kohimarama 21.2.23.
   Ex H2987. 110 h.p. Le Rhône. To Canterbury (NZ) Aviation Co Ltd. Transferred to NZPAF June 3 as H2987.
 G-NZAA  Ex H2988. To NZ Flying School, Kohimarama as "J"; converted to 504L dual control. Crashed Onerahi. To NZ Govt 1.9.24 but may never have been used by NZPAF.
 G-NZAC  Ex H2989. To NZ Flying School, Kohimarama as three-seater "K". To NZ Government 1.9.24, but may never have been used by NZPAF.
 G-NZAB  Ex H2990. Either delivered as or converted to 504L. 130 h.p. Clerget. To NZ Flying School, Kohimarama as "L". To NZ Govt 1.9.24, may never have been used by NZPAF.
 G-NZAO  Ex H5240. To NZ Flying School, Kohimarama as three-seater "N". Converted to 130hp Clerget December 1921. To NZ Aerial Transport Co, Hastings, pre May 1922.
   Ex H5241. To NZ Aero Transport Co Ltd, Timaru. Rebuilt with 110 h.p. Le Rhône March 1922. To Wigram 4 June but nothing more known.
South Africa
Total   (30) 
 401 - 432  Ex H9679 - H9686, H9688, H9689, H9691 - H9699, H9700 - H9703, H9706 - H9712. See note 7.
Total Gifted   (189)



Post War Production - Non-U.K. Built Type 504K

Production List Top Page Top 

Serial Range
C/n
Batch Qty
Conv.
Canc'd
Notes
Australia
 6 aircraft ordered from The Australian Aircraft and Engineering Co. Ltd. of Mascot, New South Wales, Australia, for the RAAF. Delivered between June 1922 and March 1923.
 A3-48 - A3-53    6      Built from local materials.
Belgium
 27 aircraft ordered from Societe Anonomye Belge des Constructions Aeronautique for the Belgian Air Force (L'Aeronautique Militaire Belge). The last delivered April, 1927.
 A-51 - A-77    27      
Canada
 500 aircraft ordered from Canadian Aeroplanes Ltd., Toronto, Ontario, Canada. for the Royal Canadian Air Force. 2 aircraft delivered October and November, 1918, the
 remainder cancelled. Due to design changes from the original 504K design, it was also referred to as the Avro 504(Canadian).
 C1501 - C1502    2    498  A proposed order for 100 aircraft for the USA was not placed.
Japan
 250 aircraft ordered from The Nakajima aeroplane Co. Ltd. (Nakajima Hikoki KK) for the Japanese Naval Air Service, deliveries beginning in 1922.
 ??? - ???    250      See note 6.
Mexico
 6 aircraft ordered from the Talleres Nacionales de Construcciones Aeronáuticas (TNCA - National Aviation Workshops), Mexico City, Mexico, for the Mexican Air Force
 (Fuerza Aerea Mexicana).
 ??? - ???    6      See note 28.
Netherlands East Indies
 16 aircraft built by the Netherlands East Indies Army Air Arm Workshops, Andir, Netherlands East Indies, for the Royal Netherlands East Indies Aviation Service
 (Luchtvaartafdeling van het Koninklijk Nederlands-Indisch Leger, LA-KNIL). Delivered from 1924.
 AL-57 - AL-72    16      AL-57 originally LA-1.
 
Total Production
307
 
498
 




Notes
  1. C/n range as given by Wixey [8] is P1/8000-P1/8149. C/ns also quoted elsewhere as PL.6001-PL.6150.
     
  2. Sturtivant [4] gives these as manufactured by Parnall whilst Jackson [2] and Bruce [3] both give A.V. Roe. However, Sturtivant is considered highly expert on RNAS matters and his version is taken here.
     
  3. Based on engine type given in airhistory.org [26], along with RNAS details by Sturtivant [4], this author has assessed the following as likely:

    Serial Range
    Notes
     A9763 - A9812  At least 11 believed completed as 504J: A9769, A9782, A9784, A9787, A9793, A9796, A9799, A9803, A9804, A9806, A9807.
     B901 - B1000  At least 31 believed completed as 504J: B903, B905 - B907, B910, B911, B915, B919, B921, B925, B927, B928, B937, B942, B944, B950,
       B958, B966, B970, B972, B974, B976, B977, B979, B980 - B982, B986, B989, B990, B996.
     B4301 - B4400  At least 26 believed completed as 504J: B4302, B4304, B4308, B4311, B4313, B4316 - B4318, B4332, B4344, B4347, B4350 - B4352,
       B4357, B4358, B4365, B4367, B4368, B4371, B4372, B4381, B4390 - B4393.
       A further 10 are believed to have been  later converted to 504J: B4376, B4378, B4382, B4385, B4394 - B4399.
     C551 - C750 At least 36 are believed to have been  later converted to 504J: C557, C558, C570 - C574, C576, C577, C581, C586 - C588, C600, C615,
       C616, C619, C624, C627, C631, C643, C646, C651 - C654, C657, C660, C680, C691, C692, C705, C732, C733, C738, C745.
       At least 6 are believed to have been  later converted to 504K: C723, C724, C746 - C749.
     C4301 - C4500  At least 3 believed completed as 504K: C4322, C4451, C4477.
     C5751 - C6050  At least 26 believed completed as 504K: C5760, C5761, C5783, C5784, C5872, C5897, C5920, C5922, C5928, C5932, C5935, C5946,
       C5950, C5952, C5963, C5967, C5969, C5970, C5992, C6006, C6018, C6020, C6034
     D6201 - D6221  At least 5 believed completed as, or later converted to, 504K: D6201, D6202, D6205, D6210, D6217.
     D7501 - D7800  At least 50 believed completed as 504J: D7503 - D7505, D7511 - D7516, D7520, D7522, D7524, D7527 - D7531, D7533, D7535 - D7538,
       D7540 - D7543, D7545, D7547 - D7550, D7576 - D7580, D7676 - D7680, D7707 - D7710, D7726 - D7730
       At least nine 504J are believed to have been  later converted to 504K: D7520, D7528, D7531, D7533, D7535 - D7538, D7543
       At least 48 believed completed as 504K: D7552, D7555, D7559 - D7568, D7574, D7575, D7581, D7582, D7588, D7589, D7591, D7592,
       D7595 - D7599, D7614, D7617, D7628 - D7630, D7632, D7633, D7643, D7645, D7646, D7648, D7649, D7656 - D7660, D7736,
       D7756 - D7760
       At least 6 are believed to have been  later converted to 504K: C723, C724, C746 - C749.
     C4301 - C4500  At least 3 believed completed as 504K: C4322, C4451, C4477.
     C5751 - C6050  At least 26 believed completed as 504K: C5760, C5761, C5783, C5784, C5872, C5897, C5920, C5922, C5928, C5932, C5935, C5946,
       C5950, C5952, C5963, C5967, C5969, C5970, C5992, C6006, C6018, C6020, C6034
     D6201 - D6221  At least 5 believed completed as, or later converted to, 504K: D6201, D6202, D6205, D6210, D6217.
     D7501 - D7800  At least 48 believed completed as 504K: D7552, D7555, D7559, D7560, D7561, D7562, D7563, D7564, D7565, D7566, D7567, D7568,
       D7574, D7575, D7581, D7582, D7588, D7589, D7591, D7592, D7595, D7596, D7597, D7598, D7599, D7614, D7617, D7628, D7629,
       D7630, D7632, D7633, D7643, D7645, D7646, D7648, D7649, D7656, D7657, D7658, D7659, D7660, D7736, D7756, D7757, D7758,
       D7759, D7760
       At least nine 504J are believed to have been  later converted to 504K: D7520, D7528, D7531, D7533, D7535 - D7538, D7543

    Further, for serial range B8581 - B8780 and based on the above references, it is this authors assertion that no 504A's were in fact built and all were completed as 504J or 504K in the numbers shown.
     
  4. The contract numbers for batches B3251 - B3300 and D8251 - D8300 are possibly reversed.
     
  5. Note that the Avro 504K displayed in the Canadian Aviation and Space Museum as “G-CYCK” is not in fact that aircraft, but its provenance is worth recording. The following from the CASM website [28]:
    • Built by Grahame-White Aviation Co. Ltd. 1918, RAF registration D8971;
    • No records found of history between 1918 and 1961;
    • Purchased from Mrs. G.H. Gallup, Connecticut by Maj. J.S. Appleby, Torence, California 1961;restoration started, approx. 70% completed;
    • Purchased by RCAF, delivered Trenton 24 May, 1966;
    • Restored 6 RD, Trenton (Crew Chief MWO H. Tate) May – Oct 1966;
    • Finished in markings of G-CYCK (RCAF), Taken on Strength (TOS) 5 Oct. 1966;
    • Flown by RCAF at Centennial Flying Displays across Canada, 1966-1967;
    • Transferred to National Aeronautical Collection (now CASM) 13 March, 1968; Registered CF-CYC Ottawa, May 1969.
    Note: 504K RAF registration H9717, originally assigned Canadian registration G-CYCK, struck off strength (SOS) at Camp Borden, 8 Mar. 1922. How D8971 came to be in the US originally is unclear.
     
  6. Locally referred to (confusingly) as 504L, though they were officially Avro Land Based Trainer.
     
  7. Brent [12] quotes 30 aircraft delivered in the serial range 401-432, so either 2 serials were unused or 32 aircraft were delivered. Robertson [11] lists only 30 serials.
     
  8. Dan Hagedorn [18] "...the very first British aircraft to arrive on Argentine shores should be a single Avro 504K - the identity of which has so far eluded historians - dropped off in Buenos Aires by Major Frank P. Scott, representing AV. Roe & Co. Ltd, who was on his way to Chile, on 2 March 1919.....Foreign entrepreneurs, recognizing opportunity in the pleasant Argentine environment, soon followed, and included....the Handley Page Co. Ltd.
    The Handley Page enterprise was more in the order of a commercial sales mission...... At the conclusion of the mission on 20 December, an unspecified number of the Avro 504Ks and Bristol F.2Bs were "donated" to the Army's Escuela Militar, de Aviacion (EMA) - the first Argentine military British-built aircraft.
    Finally, the Sociedad Angle-Argentina de Aviacion, about which little is known, started training activities at Longchamps on 21 April 1921 under the guidance of one Eduardo Miguel Hearne, using what was described as an "Avro Sport" with a 100hp Renault engine.
    Argentine military use of the 504 series is, at best, confused. One 504K was, apparently, received via the "Imperial Gift" mode (probably E3785) although nine others commonly cited as going to the Army (E9428. E9430, H1913, H2024, H2026, H6603, H7422, H7492 and H7497) in fact were for the civil market and are almost certainly amongst the civil 504s cited earlier. Four were definitely in EMA hands by 6 January 1921, and this had increased to 20 by 5 December 1922. a figure which held steady as late as 17 January 1924."
    Further information is to be found in 'Los AVRO 504 en Argentina y el método Gosport' by Eloy Martín [43], in Spanish, some sections of which are translated here:
    "Among the delegations that visited... veteran of the RFC Frank Pilkington Scott arrived in Buenos Aires, who brought the AVRO 504K.... H2476.
    On July 31, 1920.....was agreed on the purchase of eight AVRO 504 Gosport (sic) biplanes (from) Handley Page Ltd.
    On December 22, Mr. J. Alberto Hinds, representative in Buenos Aires of the Handley Page firm, formalized the delivery at the El Palomar aerodrome, as a donation, to the Army Aeronautical Service, of an AVRO 504K biplane.
    On November 6, the National Pro-Civil and Military Aviation Commission also handed over to the Army Aeronautical Service a biplane AVRO 504K Standard....acquired with funds from the public collection made in that Buenosairean locality. Thus between 1920 and 1922, the Military Aviation School received twenty-two AVRO 504K Standard, painted olive green, reconditioned to new....enrolled from 1 to 22, were in service as training and school aircraft until the end of 1927.
    In 1926 the Argentine army (acquired) an AVRO 504K model (registration F8841) equipped with a.... Bristol Lucifer IV....reports of 1926 drafted by the Army Air Service gave account of the existence of at least three units of this model." These were known as Avro Lucifer or Avro 504K Lucifer in Argentine service.
    According to Jackson [2], four aircraft (E444, H2512, H2562 and F8841) were exported to Argentina via the Aircraft Disposal Company which featured standard 504K fuselage and mainplanes and 115 h.p. Bristol Lucifer IV powereplants. Although referred to as 504N, this author believes the Argentinian term of 504K Lucifer more appropriate.
    airhistory.org [26] lists the serials of 13 aircraft supplied aircraft to Argentina:
    • H1913, H7497 Sold Argentina (ADC Aircraft Ltd ) 04 June 1921.
    • E9428, E9430, H6603, H7422, H7492 Sold Argentina (ADC Aircraft Ltd ) 04 June 1921.
    • E444, F8841, H2512, H6603, H7422, H7492 To Argentina (date unspecified).
    • H2562 Sold (ADC Aircraft Ltd) unspecified.
    airhistory.org also gives H2024, H2026 Sold Argentina (by ADC Aircraft Ltd.) 23 April 1921, but also indicated as to Brazil as A2 and A3, which would appear more likely.
     
  9. Loosely translated from [45]: In 1920, Handley Page Ltd supplied one 504K with the intention of establishing of an airline in Brazil. This was short lived and the aircraft was donated to the Brazilian government and delivered to the Navy for use in the School of Naval Aviation (Escola de Aviação Naval). Four more Gnome Monosoupape powered aircraft were acquired in the first half of 1921, followed by another 12 provided for in a contract concluded on May 23, 1922, configured with the 110h.p. Le Rhône. In 1924, the four remaining aircraft were re-registered 411 to 414.
    Quoted ex-RFC serials are from Andrade [19] and airhistory.org [26].
     
  10. Alberto Fernandez Donoso and Ray Sturtivant [16] state: "(Chile)...received two dual control Avro 504Ks under the compensation arrangements, and with Chilean numbers C-100 and C-101 ….. 12 Avro 504Ks became Chilean 71 to 82 …...Two unidentified Avro seaplanes are reported to have been supplied in 1920, fitted with 130 h.p. Clerget engines, but possibly these were two of the series 71 to 82 fitted with floats." The same publication shows a photograph of an Avro 504L , probably a seaplane conversion, numbered' '1'.
    The article then summarises as follows:
    • 1919 12 Avro 504K 71-82. Some doubt as 10 numbers. Also reported as four (79-82) and six.
    • 1919 2 Avro 504K C-100 and C-101 (supplied 1921?).
    • 1921 10 Avro 504K Reconditioned machines with 110 hp Le Rhone, inc G-EAMO/J746 and G-EANE/J751. deld 9.21. May only have been 5 aircraft.

    Dan Hagedorn [17] replies with the following: "..in the case of the Avro 504Ks, the serials cited by the authors (71 to 82) are a bit too straight forward, as "70" (also named Esmeralda) is also known - apparently a second use of this number, which also appeared on an M.1C. It should probably also be pointed out that these early serials were used in conjunction with names (at the same time - a point not made too clear in the text). A quick look at these follows:

    Serial
    Name
    Fate / Notes
    -
    General del Canto
     
    70
    Esmeralda
     
    75
     
    Avelardo Nuñez
     
     One of the seaplanes; also named "Jabelaro Nunez" at one point.
     Crashed 4 June 1922.
    76
     
     
     Also cited as "Esmeralda". Crashed 3 January 1921, but later cited in
     service as late as 10 January 1931 as an ex-Navy machine!
    77
    Colchagua
     Crashed 16 January 1922.
    78
     
    Capitan Avalos
     
     Rank may have been abreviated as painted on the aircraft.
     Crashed 12 July 1921.
    79
    Mallico
     Crashed 27 January 1927.
    80
    Chiloe
     In service as late as September 1922.
    81
     
    Atacama
     
     Crashed 21 November 1933, by which date the name had probably
     been long since dropped.
    82
    Curico
     

    At this point, the Chilean Avro 504 story gets rather complicated, as serials 84,85,86, 92 and 97 are also known. It appears that C-100 and C-101, cited by the authors, may have been ex-Navy machines, and it has been suggested that they became serials 75 and 76 respectively!"

    George A. Jenks [17] follows with:
    1. The first batch of 504Ks may well have been for 12 aircraft in view of the rare photo illustrated in Archive 1988 No.4 which appears to show Nos. 75, 78 named Captain Avalos and No. 82 Curico all falling within the quoted serials.
    2. The batch of ten aircraft reconditioned by Avro also contained G-EAKB* according to my notes.

    *Air Briain Register [55] gives G-EAKA, rather than 'KB, as sold and marks cancelled in August 1921.

    Finally, Insignia magazine [48] adds further twists:
    "Six Avro 504K trainers arrived in Chile during May 1919. These dual control aircraft replaced the few Blériot monoplanes then in use at the Escuela de Aeronáutica.
    A National Collection was made on 27 August 1920, that raised enough funds to purchase eight more Avro 504Ks. These machines wore a fuselage inscription with the name of the city that contributed to its purchase. Another collection, by the public schools of Chile, enabled the acquisition of another Avro 504K". This gives a total of 15 aircraft, but it is accompanied by a table (which covers a variety of aircraft, but makes no mention of serials 71 through 74) that lists a total of 18 504Ks; an extract from the table is included here:

    Serial
    Name
    Fate/Notes
    75
    J. Abelardo Nuñez
     Purchaced by public school subscription. Crashed 4 June 1922.
    76
    Esmeralda
     
    77
    Colchagua
     Crashed 16 January 1922.
    78
    Capitan Avalos
     Subsequently carried the name Malleco and then MagaIIanes.
    79
    Mallico
     Crashed 27 January 1927.
    80
    Chillán
     Later Chiloé
    81
    Atacama
     
    82
    Curico
     
    92
     
     
    97
    Jeneral Körner
     
    98
     
     
    99
    Jeneral del Canto
     
    100
     
     
    101
     
     Withdrawn from service 7 June 1926.
    102
     
     Withdrawn from service 7 June 1926.
    103
     
     Withdrawn from service 7 June 1926.
    104
     
     Withdrawn from service 7 June 1926.
    107
     
     

    This gives some credence to Hagedorn's conjecture that "C-100 and C-101, cited by the authors, may have been ex-Navy machines, and it has been suggested that they became serials 75 and 76 respectively", though possibly not those precise serials.
    An accompanying photograph (the same as referenced by Jenks above) positively identifies serials 75, 78, 82 and 97.
     
  11. Given c/n's or original RFC serials are for batch only and are not in direct relationship to the new military serial.
     
  12. All fitted with 100 h.p. Gnome except as noted. When the Imperial Gift reached New Zealand they were either placed in storage or loaned to the flying schools, barnstormers and nascent commercial operators, as indicated. When the New Zealand Permanent Air Force (NZPAF) was formed on 14 June 1923, it was initially equipped with the surviving Avro 504Ks amongst others. From Air Britain Archive [14] : "21 Avro 504s are listed in the .... batch of Imperial Gift aircraft rather than the normally accepted 20. The likelihood of one serial being incorrectly quoted (possibly H1968 for H1965 for example) would explain the discrepancy, otherwise one 504 may have found its way to New Zealand by alternative means."
     
  13. Supplied by the British Aviation Mission to Japan in September 1921. Mikesh & Abe [6] quote 30 aircraft, supplied as 20 landplanes and 10 seaplanes. Colonel The Master Of Semphills' report on the Mission in Flight [53] gives the aircraft supplied as Avro 504K with 110 h.p. Le Rhône and Avro 504L with 150 h.p. Bentley BR1. Precise details of the aircraft supplied are now impossible to determine, but the Japanese Civil Register [15] indicates 5 aircraft with c/ns falling into the Avro Hamble series: 5030, 5035, 5037, 5042 and 5044. Twenty one Hamble c/ns, 5017 - 5039 and 5041 - 5048, are currently unaccounted, some of which could possibly apply to these aircraft.
    Also in 1921, A.V. Roe & Co sold manufacturing rights to Japan, as well as 48 complete aircraft. Jackson [2] refers to these going to the Army, but are more likely they were also supplied to the Imperial Japanese Navy. He also states that 8 of these were ex-joyriding aircraft, but Cruddas [49] does not list any of the applicable aircraft (see Temporary Ferry Registrations list) as having flown with the Avro Transport Company.
     
  14. It is not known how many, if any, received US serials. A photo of D9028 [24] show it marked "1621", and Baugher [22] gives 1628 as ex D9038, but in both cases the serial belonged to a Curtiss J-4A [23]. Seven surviving aircraft were shipped to the US in 1919:
    • Four aircraft with British serials: D9062, D9071, D9072 and D9317. These do not appear to have received US serials.
    • Two aircraft of unknown provenance received US serials: 68558, 94023.
    • One unknown aircraft.
    Of these, three were assigned to McCook Field, Dayton, Ohio in 1920: 94023, which received McCook Field numbers P-141, D9062 (P-142) and one other as P-391. Baugher [22] gives serial 94062 as a 504J with McCook Field number P-142, but Casari [23] has a Roland D.VI with this serial.
     
  15. A request was made on 11 November 1918 to the British Government for the purchase of nine Type 504s, for which Casari [21] gives seven Type 504Js (C5753, C5965, C5886, C5887, C5888, C5889, D4365), one 504K (D8282) plus one unknown. Airhistory.org [26], based on Air Ministry Files AIR 2/136, shows 11 aircraft delivered to the British War Mission (C5752, C5753, C5754, C5865, C5886, C5887, C5888, C5889, D4365, D8281, D8282). Probably C5965 per Casari is in error for C5865, and the one unknown either C5752, C5754 or D8281.
    Again per Casari, one machine would appear to wrecked or otherwise disposed of, as the Order was written for just eight aircraft. These were assigned U.S. Serial numbers 62953 - 62959, plus possibly one more. Two of these aircraft were assigned to McCook Field, Dayton, Ohio, in September 1919: C5886 and C5887, which received McCook Field numbers P-118 and P-119 respectively, with C5886 receiving new serial 94022 at the same time.
     
  16. RFC Type 504 serial 753 landed on March 21, 1915 at St Kruis in Zeeland and was interned into the LVA as LA-13. The 80 h.p. Gnome was replaced in 1917 by a Thulin engine. In 1918 the serial was changed to A-21 and later to A-1 as a ground instruction airframe. Three days later, RNAS Type 504B serial 1001 landed near Kruiningen and was interned into the LVA as LA14. Like LA13, its powerplant was replaced with a Thulin in 1917. In 1918 the serial was changed to A-22 [51].
     
  17. Remaining aircraft were fitted with an Armstrong Siddeley Mongoose powerplant in place the Clerget in 1931. These were then re-serialed "AM" with the original aircraft number.
     
  18. A3 serials were allocated with the formation of the RAAF in 1921.
     
  19. Per AIR 2/136. However, Air Britain [1] has H2623 with No.29 Squadron RAF in 1925. Air Britain presumed in error.
     
  20. Per Bruce [24], this batch of serials should all have been 504K. However, reviewing Sturtivant and Page [4] and RFC serials via airhistory.org [26], it is clear that this was a mixed batch of 504J/504K. Analysis of [4] and [26] leads this author to reasonably assume at least 48 504K identified, as shown in note 3.
     
  21. 12 aircraft were received in 1919 receiving registrations M-MAAA to M-MAAL and serials 1 to 12 respectively. In 1920, a further 20 aircraft were received, being registered M-MAAM to M-MAAZ, M-MABA, M-MABE, M-MABI, M-MABO and M-MABU with serials 13 to 31 respectively. Two other registrations are known, M-MABD and M-MACA but their serials are unknown. At least a further 15 aircraft were received being serialed 32 to 48, with No. 40 being fitted out as an air ambulance. (From David Garbett, 24 Sept. 2018, via Air Britain Information Exchange forum).
     
  22. 15 504Ks were received in 1921 registered M-NOAB to M-NOAP inclusive, of these M-NOAD and M-NOAE were converted to Avro 504Ls at Barcelona. In 1922 an additional 4 504Ks were received: M-NOAT, M-NOAV, M-NOAX and M-NOAY. A further four 504Ks were received as replacements in the second half of 1925, receiving the registrations M-NOBF, M-NOBH and two other as yet unidentified registrations in the M-NOB* range. These last four have been quoted as being ex RAF serials E434, E445, E450 and H2057.
    In June 1931, the remaining 9 aircraft were re-registered EA-FAA to EA-FAI. On 22 June 1933 the 5 surviving aircraft we assigned numeric numbers, which were carried on the tail while the EA-F** registration remained on the fuselage, number registration tie-up is EA-FAC = 1, EA-FAE = 2, EA-FAF = 3, EA-FAH = 4 and EA-FAI = 5. In 1935 the aircraft were again renumbered, this time losing the EA- registration. The 4 remaining aircraft were A-1 ex 1, A-2 ex 3, A-3 ex 4 and A-4 ex 5. (From David Garbett, 24 Sept. 2018, via Air Britain Information Exchange forum).
     
  23. No's 103 (2nd use of serial) and 105 were supplied in November 1920 with 100 h. p. Sunbeam Dyak powerplants, assembled at the Kjeller aircraft factory and delivered to the Sønnenfjeldske Flyavdelning (103) and Hærens Flyveskole (105) in July 1921. Serial 107 was presented in June 1922 by Roald Amundsen (140hp Gnome-Rhône).
     
  24. Insignia [47] implies up to 60 504Ks were operated by the Chinese Aviation Service between 1920 and 1923 and remaining with the Central Government until 1927. A further 2 (or part of the previous 60?) were used by the Manchurian Air Force.
     
  25. Usually quoted as 5 aircraft supplied to Sweden but the final 3 were supplied as 504 Mk.II.
     
  26. Both aircraft given new c/ns after crashing and being rebuilt in the Army Workshops at Kjeller and given a new 90hp Thulin powerplant.
     
  27. The following are known to have been acquired for conversion or export, but their fate unknown:
    • D1613, D1631, F2547, F2574, F8828 and H1978, all sold by Handley Page Ltd.
    • E442 and H6654 sold by ADC Aircraft Ltd.
    • F2548 sold abroad (unknown vendor).
    • H9771 - H9812 delivered as salvage, of which H9645, H9772, H9774, H9777, H9778, H9786, H9793, H9794, H9795, H9799, H9802, H9807 to ADC.
    In addition, of the batch J743 - J763 plus J803, all re-purchased by Avro, J744 and J750 are accounted for.
    These could provide some of the exports for which no provenance is given in the table.
    Serials J765 - J802, J804 - J1023 went straight to store except J833, J835, J869, J875, J1015, and provided many of the airframes for those marked as "Built from Spares"
     
  28. From George Jenks [52]: "The Mexican Air Force operated a batch of at least six Avro 504Ks fitted with what appears to be a slightly different (earlier?) version of the modified [504 Mk.II] undercarriage, These were apparently indigenously built under licence from Avros as the Anahuac but may have been erected from parts, as sometimes happened, supplied by the company in 1921/22. According to R.T. Jackson, in the latest edition of the Putnam Avro book, E9412 was imported into Mexico from the UK. It is not known if this was for use as a pattern aircraft, and was therefore fitted with the undercarriage in question, or if the design was produced by Avros under either of the original designations 504K Mk.II or 504N in 1921/22."
     
  29. Per Andersson [58], British intervention forces brought about 30 Type 504Ks to Russia during the Civil War. Known aircraft are E3548, E3582, E3583, E3707, H2280 (or possibly F2280), H9673 - H9678 (unloaded from SS Diyatalawa at Novorossisk, 25 Jan 1920), H9747 - H9758.
     
  30. Commissioned by the Portuguese Government through Vickers Ltd, but under contract C.1113 / 23 of November 10, 1923 to Avro, consequently all have Avro c/ns. The c/ns are per the Ex OGMA blog [59], except this author believes that three are in error; the blog has R3/LE/12033, 12084 and 12402 which this author believes should be 12133, 12184 and 12422 repectively and have been corrected accordingly.
    These 30 aircraft were distributed as follows: 14 aircraft ito Escola de Aeronáutica (EMA – Military Aviation School), 13 to the Esquadrilha de Treino e Depósito (Training and Depot Squadron) and 3 to No.1 Fighter Squadron. Later, 3 aircraft were transferred to the Aviação Naval (Naval Aviation).

Production References
  1. Air Britain RAF Aircraft Register Series, Various Volumes (Air-Britain Publications
  2. Avro Aircraft Since 1908, A.J. Jackson (Putnam, 1965 & 1990)
  3. British Aeroplanes 1914-18, J.M. Bruce (Putnam, 1957)
  4. Royal Navy Aircraft Serials and Units, 1911-1919, Ray Sturtivant and Gordon Page (Air-Britain Publications, 1992)
  5. Berkshire Aviation Co. Ltd., Air Pictorial, Sept. 1977
  6. Japanese Aicraft 1910-1941, Robert Mikesh & Shorzoe Abe (Putnam, 1990)
  7. Canadian Aircraft since 1909, K.M. Molson & H.A. Taylor (Putnam, 1982)
  8. Parnall Aircraft since 1914, K.E. Wixey (Putnam, 1990)
  9. Plane to Plane - The Story of Frederick Sage & Co. Ltd, Martyn Chorlton (Old Forge Publishing, 2004)
  10. Eastbourne Aviation Company, A History of the,  1911-1924, L.McMahon & M. Partridge (Eastbourne Local History Society, 2000)
  11. British Military Aircraft Serials, 1878 - 1987, Bruce Robertson (Midland Counties Publishing, 1987)
  12. 85 Years Of South African Air Force, Winston Brent (Freeworld Publications, 2005)
  13. Australian 504s, Air Enthusiast 44
  14. Complete Civil Register of New Zealand, Air Britain Archive, 1981/1 (Air-Britain Publications)
  15. Japanese Civil Register 1919-1945, Air Britain Archive 1995/4 through 2003/3 (Air-Britain Publications)
  16. Air Britain Digest, 1989/1 (Air-Britain Publications)
  17. Air Britain Digest, 1989/3 (Air-Britain Publications)
  18. Air Britain Digest, 1990/3 (Air-Britain Publications)
  19. Latin American Military Aviation, John M. Andrade (Midland Counties Publications, 1982)
  20. Avro 504 in Australian and New Zealand service at http://www.adf-serials.com.au/home.htm
  21. Encyclopedia of U.S. Military Aircraft Part II: The World War I Production Program, Volume 1 - Avro 504 to Bristol Scout, Robert B. Casari (Robert B. Casari, 1972)
  22. http://www.joebaugher.com/usaf_serials/1908-1920.html
  23. US Army Aviation: Serial Numbers & Orders, 1908-1923, Robert B. Casari (Military Aircraft Publications, 1995)
  24. Avro 504K, Windsock Datafile 28, J.M. Bruce (Albatros Productions, 1991)
  25. https://www.icao.int/secretariat/PostalHistory/botswana_1984_40th_anniversary_of_icao.htm
  26. http://www.airhistory.org.uk/rfc/aircraft.html
  27. http://www.airhistory.org.uk/gy/index.html
  28. https://documents.techno-science.ca/documents/CASM-Aircrafthistories-Avro504K.pdf
  29. Canadian Military Aircraft Serial Numbers at  http://www.rwrwalker.ca/
  30. https://www.avro504.org/ActualAircraft.html
  31. https://www.avro504.org/AvroSerialNumbers.html
  32. http://www.edcoatescollection.com/
  33. http://www.belgian-wings.be/index.htm
  34. http://latvianaviation.com/Avro_504K.html
  35. Irish Air Corps Aircraft 1922-1997 at  http://www.iol.ie/~asire/aircorps.html
  36. Avro 504 in Chile at http://ivansiminic.blogspot.com/search?q=avro+504
  37. http://www.amilarg.com.ar/avro-504.html
  38. Aviation in Thailand at  http://www.earlyaviators.com/ethai1.htm
  39. Aviation in Sweden at  http://forum.flyghistoria.org/
  40. Aviation in Sweden at  http://www.svfplhist.com/
  41. Avro 504 in Swedish service at  http://www.avrosys.nu/aircraft/MFV/064-Avro-504K/064-Avro504K.htm
  42. The History Of Danish Military Aircraft Volume 1, Ole Nikolajsen at  https://www.ole-nikolajsen.com/history%20acft%20dk.pdf
  43. Los AVRO 504 en Argentina y el método Gosport at  https://www.histarmar.com.ar/AVIACION/EloyMartin/EO20c/E020c.pdf
  44. http://www.naval.com.br/anb/ANB-aeronaves/Avro_504_K/Avro_504_K.htm
  45. http://www.armasnacionais.com/2017/10/avro-504k-na-aviacao-naval.html
  46. Air Forces Of The Baltic States 1918-2001 (Blue Rider Publishing, 2001)
  47. Insignia No.11 (Blue Rider Publishing)
  48. Insignia No.12 (Blue Rider Publishing)
  49. Those Fabulous Flying Years, Colin Cruddas (Air Britain (Historians) Ltd, 2003)
  50. http://www.daya.org.tw/hot-news-1/10003ju-ya-bao/dayadiyiweifeixingyuanzhangkuncan-1
  51. Avro 504 in Dutch service at  https://kw.jonkerweb.net/index.php?option=com_content&view=article&id=735:avro-504-uk&catid=82&lang=en&Itemid=544&showall=1&limitstart=#Registratie-KLu
  52. Aeromilitaria, 1995/4 (Air-Britain Publications)
  53. Flight 10 Apr 1924
  54. Aerial Age 13 Dec 1920
  55. The British Civil Aircraft Registers 1919-1928, Compiled & Edited by Peter W. Moss (Air-Britain, 1969)
  56. The British Civil Aircraft Registers G-AAAA-'AAZZ (1928-1930), Compiled & Edited by Peter W. Moss (Air-Britain, 1971)
  57. British Isles Civil Aircraft Registers 1919-2011 (LAAS International, 2011)
  58. Soviet Aircraft and Aviation 1917-1941, Lennart Andersson (Putnam, 1994)
  59. Avro 504 in Portuguese service at   https://ex-ogma.blogspot.com/2009/02/avioes-da-am-avro-504-k.html

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Revised at Version 1.4.0
  • Page completely rewritten.
  • Further export details added.

V1.4.4 Created by Roger Moss. Last updated August 2020