Date:	Tuesday 23 April 1946
Time:	day
Type:	Vultee Vengeance Mk IV
Owner/operator:	631 Sqn RAF
Registration:	FD142
MSN:
Fatalities:	Fatalities: 0 / Occupants: 1
Aircraft damage:	Destroyed
Location:	Gwern-y-Mynach (Monksmarsh) Beach, Barmouth, Gwynedd, Wales -   United Kingdom
Phase:	En route
Nature:	Military
Departure airport:	RAF Llanbedr, Llanbedr, Gwynedd, Wales
Destination airport:

Narrative:
Ex-USAAF 41-31331. The service life of this Vengeance included assignments to the FAA Royal Navy and 631 Squadron, RAF. On 23rd April 1946, while being operated by 631 Squadron out of RAF Llanbedr, Gwynedd, this Vengeance Mk. IV made a forced landing on Gwern-y-Mynach (Monksmarsh) beach Barmouth, Gwynedd, Wales during a cross country NAVEX (navigation exercise). The supercharger oil seals failed and this in turn led to loss of oil pressure and engine failure.

Aircraft presumed written off (damaged beyond repair) as no further records found. No casualties or injuries reported.

1. Halley, James (1999). Broken Wings – Post-War Royal Air Force Accidents. Tunbridge Wells: Air-Britain (Historians) Ltd. p.39. ISBN 0-85130-290-4.
2, Royal Air Force Aircraft FA100-FZ999 (James J Halley, Air Britain, 1989)
3. http://www.ggat.org.uk/timeline/pdf/Military%20Aircraft%20Crash%20Sites%20in%20Southeast%20Wales.pdf
4. http://ciapoldiescorner.blogspot.com/2009_04_01_archive.html
5. http://www.joebaugher.com/usaf_serials/1941_5.html
6. 631 Squadron RAF ORB for the period 1/1/1946 to 31/12/1949: File AIR 27/2529 at https://discovery.nationalarchives.gov.uk/details/r/C2505167
7. "RAF Write-offs 1946": Air Britain Aeromilitaria 1979 p.98: https://air-britain.com/pdfs/aeromilitaria/Aeromilitaria_1979.pdf
8. https://en.wikipedia.org/wiki/No._631_Squadron_RAF
9. https://en.wikipedia.org/wiki/Barmouth

Date/time	Contributor	Updates
15-May-2019 20:55	Dr. John Smith	Added
16-May-2019 09:42	stehlik49	Updated [Operator]
09-Nov-2019 22:08	Dr. John Smith	Updated [Location, Source, Narrative]
09-Nov-2019 22:20	Dr. John Smith	Updated [Source, Narrative]
12-Jul-2021 02:57	Dr. John Smith	Updated [[Source, Narrative]]
01-Jul-2023 15:32	Dr. John Smith	Updated [[[Source, Narrative]]]