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Boulton and Paul P.29 Sidestrand, P.75 Overstrand and P.80 Superstrand

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

Produced Variants

P.29 Sidestrand Mk.I Three seat biplane medium bomber to Specification 9/24. Two 425 h.p. Bristol Jupiter VI powerplants.
P.29a Sidestrand Mk.II Initial production version. Essentially identical to P.29 Sidestrand Mk.I.
P.29a Sidestrand Mk.III
 
As Mk.II but with revised bomb aimer location to Specification 10/29 (originally 25/27). Two 460 h.p. Bristol Jupiter VIII or VIIIF powerplants.
P.29a Sidestrand Mk.IIIS As Mk.II but with two 555 h.p. Bristol Pegasus I.M.3 powerplants driving four bladed propellers.
P.29a Sidestrand Mk.IV See note 1.
P.29a Sidestrand Mk.V Initial designation of the P.75 Overstrand.
P.75 Overstrand
 
Improved P.29 featuring an enclosed cabin and a powered nose turret. Initial prototype conversionsions were to Specification 29/33, with production to Specification 23/34. Two 580 h.p. Bristol Pegasus H.M.3 powerplants.


Projected Variants

P.57
 
General purpose aircraft/medium bomber development of the P.29 for the Irish Free State. Two Armstrong Siddeley geared Jaguar powerplants.
P.60
 
Photographic aircraft development of the P.29 for the Royal Canadian Air Force. Two Armstrong Siddeley geared Jaguar powerplants.
P.61 Streamlined mail carrier aircraft development of the P.29. Two Bristol Jupiter XFB powerplants.
P.62 Bomber/torpedo carrier based on the P.61. Two Bristol Jupiter XF or Armstrong Siddeley Panther powerplants
P.62A Civil transport version of the P.61.
P.77 Coastal reconnaissance development of the P.75.
P.80 Superstrand
 
Developed version of the P.75 featuring a retractable undercarriage and improved nose turret. Two Bristol Pegasus IV powerplants.



Production List Page Top




P.29 Sidestrand

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Serial Range C/n Type Batch Qty Conv. Canc'd Notes
 2 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 555797/25. Delivered March and June 1926.
 J7938 - J7939    Mk.I  2      Both converted to Mk.II in early 1928
 (J7939)    Mk.IIIS    (1)    Converted 1931
 11 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 789943/27. Delivered between February 1928 and September 1929.
 All ordered as Sidestrand II, but final 5 completed as Sidestrand III
 J9176 - J9181    Mk.II  6      J9176 to Mk.III prototype; all but J9180 conv. to Mk.III.   J9179 conv. to Overstrand.
 J9185 - J9189    Mk.III  5      J9185, J9186 converted to Overstrand. See also note 1.
 4 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 921961/29.
 J9767 - J9770    Mk.III  4      J9770 converted to Overstrand.
 3 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 92429/31. Delivered between December 1931 and January 1932
 K1992 - K1994    Mk.III  3      
  Total Production 20 (1)    




P.75 Overstrand

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Serial Range C/n Batch Qty Conv. Canc'd Notes
 4 aircraft converted by the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 199464/32. Prototype first flew early 1933.
 J9185, J9186,   J9179,        (4)    J9186 prototype (Originally Sidestrand Mk.V)
 J9770          
 19 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 337825/34. Delivered between October 1935 and July 1936
 K4546 - K4564    19      
 5 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk, to contract 414246/35. Delivered between February and April 1937.
 K8173 - K8177    5      
  Total Production 24 (4)    




P.80 Superstrand

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Serial Range C/n Batch Qty Conv. Canc'd Notes
 5 aircraft ordered from the Aircraft Department of Boulton and Paul Ltd, Mousehold, Norwich, Norfolk. Not built, serials reallocated.
 K8621 - K8625        5  
  Total Production     5  




Production Summary

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P.29 Sidestrand - All Aircraft By Type and Mark
Type Built New Conv. Canc'd Total
 P.29 Sidestrand Mk.I 2     2
 P.29a Sidestrand Mk.II 6     6
 P.29a Sidestrand Mk.III 12 (5)   17
 P.29a Sidestrand Mk.IIIS   (1)   1
  20 (6) 0  

P.75 Overstrand - All Aircraft By Type
Type Built New Conv. Canc'd Total
 P.75 Overstrand 24 (4)   28
  24 (4) 0  

P.80 Superstrand - All Aircraft By Type
Type Built New Conv. Canc'd Total
 P.80 Superstrand     5 5
  0 0 5  


Notes
  1. In late 1930 J9186 was experimentally fitted with supercharged 500 h.p. Bristol Jupiter XF powerplants each fitted with a Townend Ring and exhaust collector. As such it may have been intended to be the Sidestrand Mk.IV.

Production References
  1. Boulton Paul Aircraft Since 1915, Alec Brew (Putnam, 1993)
  2. Air Enthusiast Quarterly #100
  3. Aeroplane Monthly Nov 1994
  4. Aeroplane Monthly Dec 1994

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