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ASN Wikibase Occurrence # 155477
Last updated: 17 September 2021
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Type:Bristol 171 Sycamore Mk 3A
Owner/operator:A&AEE Boscombe Down (Aeroplane & Armament Experimental Establishment Boscombe Down)
Registration: WT939
MSN: 12896
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Boscombe Down, Wiltshire -   United Kingdom
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Boscombe Down Wiltshire (EGDM)
Destination airport:
Ex-G-ALTB, first registered as such 17/11/1950 to the Bristol Aeroplane Co, Filton, Bristol, Gloucestershire (C of R 12809/1, larer R.2778/1). Registration cancelled as "transferred to Air Ministry as WT939" on 22/2/1953. Sent to Edmonton, Alberta, Canada, for cold weather trials

Written off 14/01/1958: The crew of two was engaged on a conversion sortie for a newly-appointed test pilot, and the aircraft captain was demonstrating rearwards flight. The pilot exceed the maximum speed during rearward flight at Boscombe Down, Wiltshire and lost control. WT939 struck the ground and rolled over. One of the two crew were injured.


1. Halley, James (1999) Broken Wings Post-War Royal Air Force Accidents Tunbridge Wells: Air-Britain (Historians) Ltd. p.194 ISBN 0-85130-290-4.
2. Royal Air Force Aircraft WA100-WZ999 (James J Halley, Air Britain, 1983 p 98)
3. Category Five; A Catalogue of RAF Aircraft Losses 1954 to 2009 by Colin Cummings p.277

Revision history:

21-Apr-2013 18:21 Dr. John Smith Added
19-Oct-2014 17:29 Route Updated [Operator]
30-Aug-2020 20:06 Dr. John Smith Updated [Time, Operator, Source, Narrative]

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