For a description of the format and data included in
Production Tables, see here.
Produced Variants
Type 171 Sycamore Mk.1
4 seat experimental helicopter to Specification E.20/45 to meet the requirements of OR.221. One 450 h.p. Pratt
and Whitney R-985 Wasp Junior radial powerplant.
Type 171 Sycamore Mk.2
4
seat civil helicopter to Specification 34/46 to meet the requirements of OR.242.As Mk.1 but fitted with a 550 h.p.
Alvis Leonides 71 powerplant.
Type 171 Sycamore Mk.3
General Purpose helicopter; as Mk.2 but featuring a shorter nose and a wider rear fuselage to allow a bench seat
for three passengers. Later machines to Specification H.106D to meet the requirements of OR.242.
Type 171
Sycamore Mk.3A
As Mk.3 with
extended rear fuselage to give extra baggage space.
Type
171 Sycamore Mk.4
As Mk.3A, with lengthened landing gear, swapped pilot/co-pilot positions and four doors.
Type 171 Sycamore HC.Mk.10
Ambulance helicopter for Royal Air Force to Specification A.9/49 to meet the requirements of OR.274. As Mk.3
but fitted with four doors.
Type 171 Sycamore HC.Mk.11
Mk.3 modified to an Army Communications helicopter to Specification A.106.
Type 171 Sycamore HR.Mk.12
Mk.3 for Royal Air Force Coastal Command Air-Sea Rescue, to Specification
HR.106P to meet the requirements of OR.304.
Type 171
Sycamore HR.MK.13
As HR Mk.12,
with lengthened landing gear and winch, to Specification HR.106P3.
Type 171 Sycamore HR.Mk.14
Mk.4 for Royal Air Force Coastal Command Air-Sea Rescue, to Specification HR.106P5.
Type 171 Sycamore HR.Mk.14B
HR Mk.14 for Belgian Air Force.
Type 171
Sycamore Mk.50
HR Mk.12 with
lengthened landing gear, for Royal Australian Navy, to Specification HR.106P2.
Type 171 Sycamore Mk.51
HR
Mk.14 for Royal Australian Navy, to Specification HR.106P4.
Type 171 Sycamore Mk.52
HR
Mk.14 for German Federal Government.
Projected Variants
Type 171 Sycamore
Two-seat
Army AOP helicopter to Specification A.6/47. One Alvis Leonides powerplant.
2
prototype aircraft built by the Bristol Aeroplane Company, Filton, Bristol,
Somerset, to contract 6/Acft/5490. First flew 27 July, 1947.
VL958, VL963
12835, 12836
Mk.1
2
VL963 allocated civil registration G-ALOU in
April 1949 for exhibition in Paris Salon that year.
2
prototype aircraft ordered from the Bristol Aeroplane Company, Filton,
Bristol, Somerset to contract 6/Acft/1286. Cancelled.
VW248, VW252
12869
2
Proposed variant of Type 171 to
Specification A.6/47.
1
prototype aircraft built by the Bristol Aeroplane Company, Filton, Bristol,
Somerset to contract 6/Acft/5490. First flew 3 September 1949.
VW905
12869
Mk.2
1
Also allocated civil registration G-AJGU but
ntu.
1
prototype aircraft built by the Bristol Aeroplane Company, Filton, Bristol,
Somerset. First flew 1950.
G-ALSR
12886
Mk.3
1
Loaned to BEA in between November 1951 and
October 1954, named 'Sir Gareth'.
3 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/2505.
WA576 - WA578
12887-12889
Mk.3
3
(1)
Originally flew with civil registrations
G-ALSS - 'SU. G-ALSU later modified to HCMk.10 standard.
4 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/6754. Delivered between August 1950 and May 1952.
WT923 - WT926
12890, 12893, 12895, 12897
HC.Mk.11
4
Originally allocated civil registrations
G-ALSV, 'SY, TA & 'TC.
2 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/6607.
WT933
12891
Mk.3
2
Originally flew with civil registrations
G-ALSW & 'TB.
1
prototype aircraft built by the Bristol Aeroplane Company, Filton, Bristol,
Somerset. First flew April 1951.
G-ALSX
12892
Mk.3
1
Retained by Bristol for sea trials during
1952. To Williamson Diamonds of Tanganyika in Feb 1958
as VR-TBS but returned UK Dec 1959.
Re-registered to Bristol as G-ALSX March 1960 and used in
Type 192 development programme.
2 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/6603.
WT939
12896
Mk.3
2
Originally flew with civil registrations
G-ALSW & 'TB.
1 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/6924. Delivered in August 1951.
WV695
12894
Mk.3
1
Originally flew with civil registration
G-ALSZ; to RAAF September 1951 as A91-1. To J. Rose Motors,
Melbourne, Victoria, in June 1966 as VH-GVR.
4 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/6948. Delivered between February 1952 and January 1953.
3 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAN to contract 6/Acft/7865. Delivered between October 1952 and January
1953.
XA219 - XA221
13063-13065
Mk.50
3
2 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/8736. Delivered in April 1953.
XD196 - XD197
13066-13067
HR.MK.13
2
2 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, by
British European Airways. Delivered in May and June 1953.
G-AMWG
13068
Mk.3A
2
Named 'Sir Gawain'. To Ansett ANA,
Australia, in July 1956 as VH-INQ.
G-AMWH
13069
Named 'Sir Geraint'.
1
prototype aircraft built by the Bristol Aeroplane Company, Filton, Bristol,
Somerset. First flew 1952.
G-AMWI
13070
Mk.4
1
Bristol demonstrator. To RAN July 1961 as
XR592.
4 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAN to contract 6/Acft/9091. Delivered between December 1953 and August
1954.
XD653 - XD656
13071, 13146-13148
Mk.51
4
XD653 originally allocated civil
registration G-AMWJ
17
aircraft ordered from the Bristol Aeroplane Company, Filton, Bristol,
Somerset, to contract 6/Acft/9584. Delivered between January 1953 and
November 1954.
XE306 - XE307
13144-13145
HR.Mk.14
2
XE308 - XE312
13149-13153
5
XE313 - XE317
13194-13198
5
Originally allocated civil registrations
G-AMWK to 'WO.
XE318 - XE322
13220-13224
5
3 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, by the
Belgian Air Force (Force Aérienne Belge) for use in the Belgian Congo.
Delivered between April and May 1954.
B-1 - B-3
13199-13201
HR.Mk.14B
3
Originally allocated civil registrations
G-AMWP to 'WS.
Initially registered OT-ZKA to 'KC in the
Belgian Congo.
1 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAAF Delivered in January 1955.
A91-2
13202
Mk.51
1
Originally allocated civil registration
G-AMWT
5 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/9584. Delivered between December 1954 and February 1955.
XF265 - XF269
13225-13229
HR.Mk.14
5
36
aircraft ordered from the Bristol Aeroplane Company, Filton, Bristol,
Somerset, to contract 6/Acft/10943 and built at Filton or Old Mixon,
Weston-super-Mare, Somerset where noted.
Delivered
between February 1955 and July 1956.
XG500 - XG505
13245-13247, 13264, 13265,
HR.Mk.14
6
13267,13245-13247, 13264,
13265, 13267,
XG506
13203
1
Originally allocated civil registration
G-AMWU
XG507
13402
1
Built at Old Mixon, Weston-super-Mare
XG508 - XG523
13239, 13269, 13268,
16
13271- 13373, 13368-13377
XG538 - XG549
13378-13389
12
Built at Old Mixon, Weston-super-Mare
1 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/6321.
XH682
12886
HR.Mk.14
(1)
Ex Mk.3 G-ALSR transferred to the Royal
Aircraft Establishment in July 1954.
10
aircraft ordered from the Bristol Aeroplane Company, Filton, Bristol,
Somerset, to contract 6/Acft/11386 and built at Filton or Old Mixon,
Weston-super-Mare, Somerset where noted.
Delivered
between March 1955 and October 1956.
XJ361 - XJ364
13248, 13266, 13240, 13241
HR.Mk.14
4
XJ380 - XJ382
13242-13244
3
XJ383 - XJ385
13390-13392
3
Built at Old Mixon, Weston-super-Mare
1 aircraft
built by the Bristol Aeroplane Company, Filton, Bristol, Somerset, as
demonstator. First flew 1955.
CF-HVX
13270
Mk.4
1
North American demonstrator. Initially
registered to Bristol as G-AOBM.
1 aircraft
built by the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
Australian National Airways Pty Ltd, Melbourne Victoria. First flew 1955.
VH-INO
13403
Mk.4
1
Name 'Yarrana'. Initially registered to
Bristol as G-AOBM.
9 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, to
contract 6/Acft/11899 and built at Old Mixon, Weston-super-Mare, Somerset.
Delivered between October 1956 and
January
1957.
XJ895 - XJ898
13404-13406, 13408
HR.Mk.14
4
XJ915 - XJ919
13409-13410,
13412-13414
5
1 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAN to contract 6/Acft/12606 and built at Old Mixon, Weston-super-Mare,
Somerset. Delivered in March 1956.
XK902
13401
Mk.51
1
1 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAN to contract 6/Acft/13096 and built at Old Mixon, Weston-super-Mare,
Somerset. Delivered in March 1956.
XL507
13407
Mk.51
1
Originally allocated XK903, but replaced
with XL507 for administrative purposes..
50
aircraft ordered from the Bristol Aeroplane Company, Filton, Bristol,
Somerset, by the German Federal Defence Force (Bundeswehr) for use by the Air
Force (Luftwaffe) and Navy (Marine). Built at Old
Mixon,
Weston-super-Mare, Somerset and delivered between May 1957 and (??) 1959.
AS-321 - AS-330
13411, 13439, 13416,
Mk.52
10
13440, 13464, 13465,
13469, 13470, 13472,
13473
BA-176 - BA-178
13442, 13443, 13445
3
BB-176 - BB-178
13466, 13467, 13476
3
BD-176 - BD-178
13477, 13482, 13483
3
CA-327 - CA-328
13463, 13475
2
CB-011 - CB-019
13486, 13487, 13492,
9
13493, 13496, 13497,
13499, 13500, 13503
CC-061 - CC-069
13488-13491, 13494, 13495,
9
13498,13501, 13502
DA-391 - DA-392
13461-13462
2
DB-391 - DB-392
13848-13849
2
GA-119, GA-247
13446, 13459
2
GB-117
13458
1
SC-201 - SC-204
13478-13481
4
10
aircraft ordered from the Bristol Aeroplane Company, Filton, Bristol,
Somerset, to contract 6/Acft/13888 and built at Old Mixon, Weston-super-Mare,
Somerset. Delivered between February and
December
1957.
XL820 - XL829
13415, 13417, 13438,
HR.Mk.14
10
13441, 13444, 13447,
13460, 13468, 13471,
13474
3 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAN to contract 6/Acft/7461. 2 aircraft built new at Old Mixon,
Weston-super-Mare, Somerset and one machine
converted
from civilian Mk.4. Delivered in June 1959.
XN448 - XN450
13270, 13504, 13505
Mk.51
2
(1)
XN448 ex-G-AOBM. After RAN service, sold to
G. V. Rose Motors, Melbourne Vic, as VH-SYC in
January 1967.
1 aircraft
ordered from the Bristol Aeroplane Company, Filton, Bristol, Somerset, for
the RAN to contract 6/Acft/7461. Delivered in June 1961.
XR592
13070
Mk.51
(1)
Ex-G-AMWI. Originally allocated XN635 but
this duplicated a Jet Provost serial. After RAN service,
sold to Business Aviation Pty Ltd, Bankstown
NSW, as VH-BAW in September 1966
2 aircraft
laid down by the Bristol Aeroplane Company, Filton, Bristol, Somerset, but
not completed.
Bristol initially instigated
two production batches, c/ns 12886 to 12900 and c/ns 13062 to 13071 and allocated civilian registrations to them all. Most
never, or only briefly, carried these and became part of military contracts. Only seven machines had a significant civilian
life.
Production References
Bristol Aircraft
Since 1910, C.H. Barnes (Putnam, 1964)
Royal Air Force Aircraft WA100-WZ999, RAF Aircraft
Register Series, J.J. Halley (Air-Britain Publications, 2003)
Royal Air Force Aircraft XA100-XZ999, RAF
Aircraft Register Series, J.J. Halley (Air-Britain Publications, 2001)
British Military Aircraft Serials and
Markings, British Aviation Research Group (BARG/Nostalgair, 1983)
Air Enthusiast Quarterly #77
British Isles Civil Aircraft Register 1919-2011 (LAAS International)
