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Scottish Aviation Twin Pioneer

Scottish Aviation's most successfull aircraft of the 1950's.
Scottish Aviation Twin Pioneer G-ANTP at Prestwick Scottish Aviation Twin Pioneer G-ANTP at Prestwick
The Scottish Aviation Twin Pioneer was a British STOL (Short Take Off and Landing transport aircraft designed and built at Prestwick on the West Coast of Scotland. Conceived to serve both military and civil operations, the aircraft could operate in an area of just 30 meters x 275 metres.
 
The prototype (G-ANTP) flew at Prestwick (officially) on 25th June 1955 (there had been a brief unofficial hop the previous day), with the first production aircraft following on 28th April 1956.
 
The high-wing monoplane, which featured a triple-fin and rudder arrangement, was initially powered by a pair of Alvis Leonides 531 radial engines although during the development of the aircraft into a Series 2 it was fitted with Pratt & Whitney Wasp power units.
 
The final incarnation as a Series 3 returned to the much improved Alvis Leonides 531 engine.
 
Scottish Aviation Twin Pioneer landing at Farnborough 1954 Scottish Aviation Twin Pioneer landing at Farnborough 1954
Military variants could carry external stores under the stub wings and a Twin Pioneer became the first commissioned aircraft for the newly formed Royal Malaysian Air Force in 1962.
 
In the UK the Royal Air Force ordered 39 aircraft which were produced at Prestwick between 1958 and 1959 and a number were deployed to serve in Aden, Malaysia and Borneo where its STOL capabilities made it an invaluable tool in areas of dense jungle with limited landing strips.
 
Civil users included Borneo Airways, Garuda, Swissair and Philippine Air Lines and the last scheduled passenger services in the UK were flown by JFA (Jersey Ferry Airlines) operating between Portsmouth and the Channel Islands. The last flying examples operated with Flight One Ltd on aerial survey duties.
 
Scottish Aviation Twin Pioneer at Staverton 1963 Scottish Aviation Twin Pioneer (LN-BFK ex-G-ASJS) at Staverton 1963
The success of the Twin Pioneer was hindered by the ready availability of cheap DC-3/C-47 aircraft.  It was further hampered by a fatal accident to demonstrator G-AOEO due to structural failure of a wing strut fitting, killing the crew which included David McKintyre, the co-founder of Scottish Aviation Limited and a driving force behind the company.

Variants

Twin Pioneer
1 Built
Protoype aircraft with Alvis Leonides 531 radial engines.
Twin Pioneer Series 1
23 Built
Production aircraft with Alvis Leonides 541 radial engines.
Twin Pioneer CC. Mk1
32 Built
Military variant of Series 1 for RAF
Twin Pioneer Series 2
6 Built
Production aircraft with Pratt & Whitney R-1340 radial engines
Twin Pioneer Series 3
18 Built
Protoype aircraft with improved Alvis Leonides 531 radial engines.
Twin Pioneer CC. Mk2
7 built
Military variant of the Series 3 for the RAF

Specification

 
Twin Pioneer CC.2
Powerplant                      
Two 640 hp Alvis Leonides 531
Span
76 ft 6 in
Maximum Weight
14,600 lb
Capacity
Two crew and up to 13 troops or 2,000 lb cargo
Maximum Speed
165 mph
Cruise Speed
131 mph
Range
791 miles

Survivors

Twin Pioneer 3                      
(G-APRS)
Classic Air Force(Now Closed) / Aviation Heritage, Coventry Airport, UK
Twin Pioneer 3
(G-BBVF)
Museum of Flight, East Fortune, Scotland, UK
Twin Pioneer CC1
(XL993)
RAF Museum, Cosford, UK
Twin Pioneer 1
(FM1001)
Royal Malaysian AF Museum, Sungai Besi AFB, Kuala Lumpar, Malaysia
Twin Pioneer
(FM1064)
Mallaca Transport Museum, Mallaca Airport, Malaysia
Twin Pioneer CC2
(VH-EVB)
Australian Aviation Museum, Bankstown, Sydney, Australia
Twin Pioneer 3
(VH-AIS)
Bradfield Airstrip, Atkinsons Dam, Lockyer Valley, Queensland, Australia
 

More information

email BAE Systems Heritage via: heritage@baesystems.com