Colin Cummings in his Clipped Wings Volume One records the aircraft as Defiant I N3449 of 10 AGS, At sea off Millom.
The aircraft was found to have crashed into the sea and despite the best efforts of the air sea rescue service, it was not possible to revive the pilot, who died of exposure. The cause of the accident was not established.
Pilot Officer James Ferguson MACKIE 28
Leading Aircraftman Geoffrey BRADSHAW 19
Hatchard, incidentally, was RNZAF and was killed on ops along with all of his 7 Squadron Lancaster crew on the night of 3/4 Sep 43 in a raid against Berlin.