McHenry was a Sarjeant in the Queen's Own Rifles Machine Gun Section before his transfer to the RFC as a Fight Cadet. He had already soloed when, on 1918-06-08, he was killed in an aerial collision at 195 Training Squadron, Rimal, Egypt while flying an Avro 504 (model not noted). The record does note:
"Died [- Avro] Collision during fighting in the air. (Lt GW Neill)"
McHenry, Charles Frederick (Flight Cadet)
Killed in Flying Accident 1918-June-08

Birth Date: 1890-July-28
Born: Toronto, Ontario.
Parents: Charles Albert L. McHenry & Annette DeLaporte
Spouse: Donalda O'Neil
Home: Toronto, Ontario.
Enlistment:
Enlistment Date: unkown date
Service
RAF
Unit
195 TS- Training Squadron (RAF)
Base
El Rimal Egypt
Rank
Flight Cadet
Position
pilot
Service Numbers
669579