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ASN Wikibase Occurrence # 206319
Last updated: 15 August 2018
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Date:10-JUL-1939
Time:day
Type:Willoughby Delta F
Owner/operator:Willoughby Delta Company Ltd
Registration: G-AFPX
C/n / msn: 1
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Caulcott, near Bicester, Oxfordshire -   United Kingdom
Phase: En route
Nature:Test
Departure airport:Whitney Aerodrome, Whitney, Oxfordshire
Destination airport:
Narrative:
The Willoughby Delta F (or Delta 8) was a small twin-engined aerodynamic test bed for a proposed flying wing airliner - the Delta 9. The Delta 8 flew in the United Kingdom for a few months during 1939 before being involved in a fatal crash. With the death of the designer, and the outbreak of WW II, there were no further developments.

The Delta first flew on 11.3.39, registered [C of R 9034] as G-AFPX. On 14.5.39, piloted by A.N. Kingwill, it was demonstrated at the Royal Aeronautical Society's garden party fly-in at Great West Aerodrome, also at Heston Aerodrome.

On 10.7.39, it crashed at Caulcott near Bicester, Oxfordshire, killing the pilot Hugh Olley and the Delta's designer, Percival Willoughby. The crash was not attributed to the novel configuration but to an ill-designed elevator trim tab that sent the Delta into a dive. Nonetheless, with the death of the designer and the coming of war, no more was heard of this type of flying wing.

Registration G-AFPX belatedly cancelled by the Air Ministry post war, on 23.1.46, due to "destruction or permanent withdrawl from use of aircraft". A note on the aircraft's record card states "(Census 1945)"; which indicates that the Air Ministry were only made aware of the demise of G-AFPX after a return from the last registered owners, in response to the Air Ministry's 1945 census into the existence (or not) of all UK-registered pre-war civil aircraft

Sources:

1. http://afleetingpeace.org/index.php/15-aeroplanes/80-register-gb-g-af
2. https://cwsprduksumbraco.blob.core.windows.net/g-info/HistoricalLedger/G-AFPX.pdf
3. http://www.airhistory.org.uk/gy/reg_G-A11.html
4. https://en.wikipedia.org/wiki/Willoughby_Delta_8
5. https://www.flightglobal.com/pdfarchive/view/1937/1937%20-%203145.html?
6. https://www.flightglobal.com/pdfarchive/view/1939/1939%20-%200371.html
7. https://www.flightglobal.com/pdfarchive/view/1939/1939%20-%200751.html
8. https://www.flightglobal.com/pdfarchive/view/1939/1939%20-%201560.html
9. https://www.secretprojects.co.uk/forum/index.php?topic=3594.5;wap2
10. http://1000aircraftphotos.com/Contributions/Braas/6410.htm
11. https://forum.keypublishing.com/showthread.php?90541-Willoughby-Delta-9G

Willoughby Delta F G-AFPX at Whitney, Oxfordshire 9.2.39 Willoughby Delta 0371

Revision history:

Date/timeContributorUpdates
18-Feb-2018 22:25 Dr. John Smith Added

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