Vickers Type 131

A two-seat all metal general-purpose biplane offered as a replacement for the Airco DH9A.
Vickers Type 131 Valiant port front metal prop The Vickers Type 131 Valiant undergoing initial tests at Martlesham Heath.
By the mid-1920s, the Air Ministry was seeking to move from wooden to all-metal aircraft structures, due to the latter’s superior durability in hot and humid conditions.
Vickers had already experienced some criticism from Chile regarding the vulnerability of the wooden wings of the Vixen to environmental extremes. Consequently, an all-metal Vixen variant was designed (initially known as the Vixen VII) and later given the name Vivid (this aircraft is described separately). In parallel, Vickers designed a general-purpose, all metal biplane, designated Vickers Type 131 Valiant, an aircraft derived from the Vixen / Vivid.
A single prototype was built as a private venture by Vickers and offered against Specification 26/27, which sought a replacement for the Airco DH9A.
Despite a general desire to move toward all-metal airframe structures, the Specification indicated a preference for a design that incorporated a significant number of existing DH9A components, as large quantities of these were being held by the RAF as spares. Despite this indication Vickers offered its Valiant prototype for evaluation.
The Valiant was a single-bay biplane of all-metal construction, powered by a 492 hp Bristol Jupiter VI engine. Its armament comprised a fixed forward-firing Vickers machine gun and a defensive Lewis gun ,mounted on a Scarff ring in the rear cockpit. A single 250 lb bomb could also be carried under each lower wing.
The unmarked prototype made its first flight by 5th March 1927 and underwent official trials at Martlesham against several competitors.
The private venture Valiant showed enough promise to be selected for Squadron Trials along with the Fairey Ferret and the Westland Wapiti.  The performance,  handling and ease of maintenance of the Valiant received favourable comment throughout although there was some criticism of the pilot’s view and the armament layout.
Most critically, the Vickers design made no use of the stocks of DH9A components and it was therefore judged to be more expensive than the winning Westland Wapiti, which was able to make extensive use of the same.
Vickers Type 131 Valiant port side The private venture Type 131 Valiant was offered as a replacement for the DH9A.
On its return from Martlesham, the Valiant prototype received the civil markings (G-EBVM) and was modified to have a split axle undercarriage.
The Valiant was shipped to Valparaiso, Chile in 1928 for a demonstration to the Chilean Air Force. The prototype was actually retained in Chile where it served with the School of Aviation. Sadly, it was destroyed in an accident on 29th March 1929.

Numbers built

Single prototype only, initially unmarked, but later registered G-EBVM.


One 492 hp Bristol Jupiter VI engine
45 ft 7 in
Maximum Weight
4,519 lb (5,105 lb with desert equipment)
Two crew pilot and gunner; fixed forward firing Vickers guns and Lewis gun on Scarff ring in rear cockpit; carriage of two 250 lb bombs.
Maximum Speed
129 mph at 6,500 ft






No examples of the Vickers Type 131 Valiant survive.

Other information