Date:	Saturday 31 July 1948
Time:
Type:	de Havilland DH.98 Mosquito T Mk III
Owner/operator:	502 (Ulster) Sqn RAF
Registration:	TV982
MSN:
Fatalities:	Fatalities: 2 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Destroyed
Location:	Cwm Llan, 1/4 mile south of Snowdon, Gwynedd, Wales -   United Kingdom
Phase:	En route
Nature:	Military
Departure airport:	RAF Horsham St Faith, Norfolk
Destination airport:	RAF Aldergrove, Northern Ireland

Narrative:
Mosquito TV982: Took off for a Ferry flight. 31/07/1948
For two weeks during July 1948 no.502 Sqdn was on detachment to RAF Horsham St Faith annual Armament Practice Camp. The exercises had finished at the end of July with the Squadron members returning to RAF Aldergrove in Northern Ireland. The Squadron's aircraft were flown back on the 31st July and 1st August with ground crews following on by rail and sea on the 2nd arriving back the following day.
PII Campbell was tasked with the ferry flight of Mosquito TV982 from RAF Horsham St Faith to RAF Aldergrove, and he had one of the ground crew along as a passenger, he had not gone over land as he was returning to Northern Ireland in a hurry due to his wife having just given birth.
Turbulence in a cumulonimbus cloud became severe enough to cause loss of control and eventual structural failure of the aircraft. The aircraft struck a rocky outcrop near Snowden at high speed.
Crew:
P.2 (2681060) Josiah CAMPBELL (pilot) RAFVR - killed
Cpl (966676) Charles Edward WALKER (pass.) RAFVR - killed

1. http://www.airhistory.org.uk/dh/_DH98%20prodn%20list.txt
2. https://www.peakdistrictaircrashes.co.uk/crash_sites/wales/de-havilland-mosquito-tv982
3. Final Landings: A Summary of RAF Aircraft and Combat Losses 1946 to 1949
4. Royal Air Force Aircraft SA100-VZ999 (James J Halley, Air Britain, 1985)
5. ORB 502 Sqn RAF ORB: National Archives (PRO Kew) File AIR27/2496:
6. https://discovery.nationalarchives.gov.uk/details/r/C2505134
7. https://aircrashsites.co.uk/air-crash-sites-5/mosquito-tv982/
8. https://aircrewremembered.com/campbell-josiah.html
9. https://geotopoi.wordpress.com/2010/05/31/cwm-llan-snowdon-de-havilland-mosquito-mk-iii-tv982-502-ulster-squadron-royal-auxiliary-air-force-31-jul-1948-2/
10. Photo of wreckage dated 24-9-2009: https://www.flickr.com/photos/28731066@N03/3472363139/
11. https://peakwreckhunters.blogspot.com/2009/05/de-havilland-mosquito-mkiii-tv982_3283.html
12. https://www.findagrave.com/memorial/178534468/josiah-campbell
13. https://www.facebook.com/groups/1911710352376330/permalink/3320542334826451/
14. Photo of wreckage in 1956-66: https://www.facebook.com/groups/39920765795/permalink/10159109004650796/

Date/time	Contributor	Updates
01-Dec-2009 09:12	NePa	Added
24-May-2010 14:33	angels one five	Updated [Operator, Location, Nature, Source, Narrative, ]
24-May-2010 14:45	angels one five	Updated [Location, ]
05-Mar-2011 13:59	Nepa	Updated [Operator, Narrative, ]
21-Mar-2011 18:53	angels one five	Updated [Operator, Narrative, ]
23-Aug-2013 11:58	Nepa	Updated [Departure airport, Destination airport, Narrative, ]
31-Jan-2014 22:13	angels one five	Updated [Aircraft type, Operator, Location, ]
03-Feb-2014 19:03	Nepa	Updated [Operator, Departure airport, Destination airport, Source, ]
28-May-2014 17:07	Nepa	Updated [Narrative, ]
09-Jul-2014 08:48	angels one five	Updated [Aircraft type, Operator, Location, Departure airport, Narrative, ]
04-Aug-2014 18:39	Lotos	Updated [Aircraft type, Operator, Location, Narrative, ]
04-Aug-2014 18:40	Oezil	Updated [Location, ]
31-Jul-2015 10:03	Nepa	Updated [Aircraft type, Location, ]
02-May-2019 20:53	Nepa	Updated [Location, Narrative, Operator, ]
18-Nov-2021 22:32	Nepa	Updated [Source, Narrative, Operator, ]