Simon Glancey has submitted the following:
Flight Sgt Steele was killed when Handley Page Halifax V LK709 KN-R of 77 Squadron was lost with all seven crew members on a mission to Berlin. The cause of the aircraft's loss is not known.
Royal Air Force Bomber Command Losses of the Second World War: 1944; W.R. Chorley; 1997; Midland Counties Publications; ISBN 0 904597 91 1, page 59
Tony Hibberd has added the following:
Halifax LK709 KN-R had departed Full Sutton at 0005 for Ops Berlin. It was probably intercepted over Berlin by a Night-Fighter captained by Oblt Josef Kraft (IV/NJG5) and shot down at 0328 for his 11th Abschuss
Nachtjagd Combat Archive 1944 Part 1 Dr Theo Boiten.
Norman Thompson Steele is remembered at Ashington on A17.01 (A17.27), and A11.43 and in Hirst on H62.02 and H62.04