Date:	Friday 10 April 1953
Time:	day
Type:	Bristol 171 Sycamore HC.11
Owner/operator:	657 Sqn/1906 Flt RAF
Registration:	WT926
MSN:	12897
Fatalities:	Fatalities: 0 / Occupants: 4
Aircraft damage:	Destroyed
Location:	RAF Middle Wallop near Andover, Hampshire, England -   United Kingdom
Phase:	Take off
Nature:	Military
Departure airport:	RAF Middle Wallop, Hampshire (EGVP)
Destination airport:	RAF Middle Wallop, Hampshire (EGVP)
Confidence Rating:	Information is only available from news, social media or unofficial sources

Narrative:
Ex-G-ALTC (registered as such 17/11/1950 to the Bristol Aeroplane Company, Filton, Bristol). Civilian registration cancelled 26/3/1952 as "sold to the military". Delivered to the RAF as WT926 for evaluations and trials with 1906 (Helicopter) Flight of 657 Squadron,

Written off (damaged beyond repair) 10/04/1953: The aircraft landed at RAF Middle Wallop, Hampshire, and immediate began to display the vibration symptons associated with ground resonance. The pilot was unable to counteract the ground resonance, the aircraft rolled over, and was severely damaged

1. Halley, James (1999) Broken Wings – Post-War Royal Air Force Accidents Tunbridge Wells: Air-Britain (Historians) Ltd. p.144 ISBN 0-85130-290-4.
2. Last Take-off: A Record of RAF Aircraft Losses 1950 to 1953 by Colin Cummings p 359
3. Royal Air Force Aircraft WA100-WZ999 (James J Halley, Air Britain, 1983)
4. https://www.helis.com/database/cn/48679/
5. http://www.ukserials.com/results.php?serial=WT
6. http://www.aviastar.org/helicopters_eng/bristol_sycamore.php
7. https://www.helis.com/database/sqd/1906-Flight/
8. picture of crash/wreckage: http://aviadejavu.ru/Images6/AE/AE98-9/18-1.jpg
9. https://cwsprduksumbraco.blob.core.windows.net/g-info/HistoricalLedger/G-ALTC.pdf
10. http://www.hampshireairfields.co.uk/hancrash.html

Date/time	Contributor	Updates
20-Apr-2013 18:18	Dr. John Smith	Added
21-Apr-2013 17:46	Nepa	Updated [Operator, Location, Departure airport]
16-Oct-2018 23:36	JINX	Updated [Location, Departure airport]
19-Mar-2021 18:48	Anon.	Updated [Operator, Location, Operator]
24-Apr-2021 00:29	Dr. John Smith	Updated [Time, Operator, Departure airport, Destination airport, Source, Narrative]