Håkansson was born 1921 and served in 165 Squadron.

On 20th January 1944 during the landing at Culmhead after scramble on the afternoon he collided with Spitfire Mk.IX MH796 ‘Q’, flown by 22-year-old Flying Officer Eric Hamilton Francis (RAF No. 136019). Håkansson’s Spitfire Mk.IX MH822 ‘Y’ received Category B damage. He was injured but Francis was unfortunately killed in this accident.

He was later transferred to 610 Squadron.

At 04:40 in the morning on 9 July 1944, he was on a Diver patrol and managed to destroy two V-1s. Then the engine on his Spitfire Mk. XIV (RB153) cut while he was attacking a V-1 and he baled out off Dungeness but was unfortunately killed.

It is possible that he had destroyed another V-1 on an earlier date.

He is remembered at Runnymede Memorial, Surrey.

Sources:
Diver! Diver! Diver!, RAF and American Fighter Pilots Battle the V-1 Assault over South-East England 1944-45 - Cull, Brian Cull and Bruce Lander, 2008 Grub Street, London, ISBN 139781904943396 kindly provided by Jan Safarik.
RAF Fighter Command losses: Volume 3 - Norman L. R. Franks, 2000 Midland Publishing Limited, ISBN 1-85780-093-1
The Commonwealth War Graves Commission
Additional information from Brian Cull kindly provided by Tomas Polak.