Chorley book indicates he crashed during flying practice.News article states that he was shot down by a German aircraft.
1918-04-20, posted to 19 Squadron. 1918-05-07 Killed in flying accident in Dolphin C3841.
Brown, William Gordon (Second-Lieutenant)
Killed in Flying Accident 1918-May-07

Birth Date: 1896-June-30
Born:
Parents: William and Nettie Elizabeth Brown
Spouse:
Home: Motherwell, Ontario.
Enlistment:
Enlistment Date: unkown date
Service
RAF
Unit
19 Sqn- Squadron (RAF)
Possunt Quia Posse Videntur They can because they think they can
Base
Rank
Second-Lieutenant
Position
Pilot
Service Numbers