From John Foreman's
Air War 1941: The Turning Point (part 2) (Air Britain), p.115 (entry for 26 Apr 41)
Sgt Vaughan's 242 Squadron aircraft was hit in the fuel tanks by Leutnant Tonne and, half way across the Channel, his engine cut. Although he managed to glide to the English coast he was killed [sic] attempting to force-land at Dungeness.
The Arthur James Vaughan serving in 1926-27 is in the RAF list for 1927 as a PO with seniority 14 July 1926); he doesn't appear in the 1926 (naturally) or 1928 Lists. In the '27 List he is recorded as being at 4FTS at Abu Suier.