Date:	Friday 30 December 1949
Time:	night
Type:	Vickers Wellington Mk X
Owner/operator:	201 AFS RAF
Registration:	LN657
MSN:
Fatalities:	Fatalities: 3 / Occupants: 3
Aircraft damage:	Destroyed
Location:	Bassingham, 2.5 miles South of RAF Swinderby, Lincolnshire, England -   United Kingdom
Phase:	Approach
Nature:	Military
Departure airport:	RAF Swinderby, Lincolnshire
Destination airport:	RAF Swinderby, Lincolnshire

Narrative:
Vickers Wellington T. Mk. X LN657, 201 AFS (Advanced Flying School), RAF: Written off (damaged beyond repair) in a night approach to RAF Swinderby, Lincolnshire 30 December 1949.

The crew was engaged in a night training sortie in RAF Swinderby. On final approach, the pilot in command decided to make a go around. He overflew the runway at low height and then started to climb when the aircraft banked left, nosed down and crashed in a wooded area at Bassingham, North Kesteven, located at approximate co-ordinates 53.12939°N 0.63901°W, about 2.5 miles south of the airfield. All three crew members were killed.

Crew of Wellington LN657:
P/O Peter Fassett (pilot) RAF - killed on active service 30/12/1949
N.IV Alan Osborne (Navigator) RAF - killed on active service 30/12/1949
Signaller III James Chadwick (Radio Operator) - killed on active service 30/12/1949

1. Halley, James (1999) Broken Wings – Post-War Royal Air Force Accidents Tunbridge Wells: Air-Britain (Historians) Ltd. p.89 ISBN 0-85130-290-4.
2. Air Britain: RAF Aircraft LA100-LZ999, published 1991
3. Final Landings: A Summary of RAF Aircraft and Combat Losses 1946-1949 by Colin Cummings p.565
4. https://www.baaa-acro.com/crash/crash-vickers-619-wellington-x-raf-swinderby-3-killed-0
5. http://www.planetrace.co.uk/1940-1949_28.html
6. http://www.bcar.org.uk/1945-1949-incident-logs.php#1949
7. https://en.wikipedia.org/wiki/Bassingham

Date/time	Contributor	Updates
27-Sep-2008 01:00	ASN archive	Added
29-Dec-2011 12:12	Uli Elch	Updated [Aircraft type, Operator, Location, Phase, Nature, Destination airport, Source, Narrative]
24-Apr-2017 19:45	Dr.John Smith	Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative]
08-Dec-2017 21:13	Laurent Rizzotti	Updated [Aircraft type]
23-Oct-2018 20:59	Nepa	Updated [Operator, Operator]
17-Dec-2020 20:49	Dr. John Smith	Updated [Source, Narrative]