804 Sqn. (Gladiators) patrolling Copinsay intercept Do 17 at 16:40.
804 Sqn's diary, quoted in Sky over Scapa, reads:
A tremendous day for HMS Sparrowhawk, the first and we hope by no means the last. 804 Squadron began their fun at 16.05 hours when Yellow Section flew off to Copinsay. There were a great many plots on the board, the weather fine with layers of cloud varying in density up to about 10,000 feet. about 16.40 hours P/O Sabey saw a Do17 and the section gave chase. Sub.Lt. Fell got in a burst at about 500 yds. as the Do17 disappeared into the cloud but followed him in.P/O Peacock went in above the cloud and as he came out so did the Do17, 400 yds. away. Peackock got in a burst before the enemy aircraft dived away back into the clouds. We were later informed that Do17 was crying SOS with a leaking petrol tank and did not reach his base.