Gladiators typically flew patrol flights that led to occasional clashes with Luftwaffe reconnaissance aircraft. On 17 October 1940, British Gladiators scored their first success when No 607 Squadron "B" Flight shot down a Dornier Do 18 flying boat ('8L+DK' of 2.KuFlGr 606), on the North Sea.[30] On 10 April 1941, 804 NAS took off from Hatston, in Orkney, to intercept a group of approaching German aircraft. Lt Cdr J. C. Cockburn was credited with one destroyed and Blue Section with a "damaged".[31]