Editing Carnedd Llewelyn (section)

==Plane crash==
On 14 March 1950 a number of [[Royal Air Force]], [[Avro Lincoln|Avro Lincoln's]] from [[No. 230 Operational Conversion Unit RAF]] took off from [[RAF Scampton]] bound for [[RAF Hemswell]], [[England]] on a night-time cross-country exercise. In the early hours of 15 March a controller at [[RAF Barton Hall]] instructed three of the Lincolns to divert to [[RAF Valley]], [[Anglesey]], Wales due to bad weather at RAF Scampton. It was at 2:55{{nbsp}}am GMT that one of the Avro Lincoln's (RF511) had gone missing and the other two aircraft landed safely five minutes later. The wreckage of RF511 was found at 5:20 GMT on Carnedd Llewelyn and it was confirmed that all six crew had died. The subsequent Court of Inquiry determined that the likely cause of the crash was pilot error; the crew had turned onto a southeasterly course over Anglesey instead of the reciprocal out to sea. The pilot misheard the instruction to "turn 180 degrees" as "turn 80 degrees", resulting in a [[controlled flight into terrain]].<ref>{{Cite web|url=http://www.peakdistrictaircrashes.co.uk/crash_sites/wales/avro-lincoln-rf511-carnedd-llewelyn/|title = 1950-03-15&#124;Lincoln B. Mk.2&#124;RF511&#124;No.230 OCU, RAF&#124;Carnedd Llewelyn, Gwynedd|date = 27 July 2016}}</ref><ref>{{Cite web|last=Zx|first=Matt|date=2009-05-12|title=wreck site uk: lincoln RF511|url=http://wrecksiteuk.blogspot.com/2009/05/lincoln-rf511.html|access-date=2021-07-29|website=wreck site uk}}</ref><ref>{{Cite web|last=Stephen|first=Graham|date=2009-11-08|title=Cwm Llafar – Avro Lincoln, RF511, 230 Operational Conversion Unit, 15 Mar 1950 (9)|url=https://geotopoi.wordpress.com/2009/11/08/cwm-llafar-avro-lincoln-rf511-230-operational-conversion-unit-15-mar-1950-9/|access-date=2021-07-29|website=GeoTopoi|language=en}}</ref><ref>{{Coflein|num=417183|desc=Avro Lincoln Rf511|access-date=2021-07-29|language=en}}</ref><ref>{{Cite web|last=Youngs|first=Kelvin|title=Aircrew Remembered Aviation Personal Histories and Databases|url=http://aircrewremembered.com/squadron-leader-john-shore-mc-afc.html|access-date=2021-07-29|website=Aircrew Remembered site|language=en}}</ref>

The wreckage of RF511 remains on the mountain, and in 2002 a memorial plaque was placed at the crash site.