Macdonald's record does not list a date of birth. I could find nothing in the public record for a Donald John MacDonald (or McDonald) with this service record. It would appear that he dropped out and changed his name post war.
1917-01-05: Macdonald, and his observer-gunner 2Lt H T Benstead were OK on the ground in Morane Biplane, A-132, when it skidded on the wood-covered pond on the aerodrome and swept under-carriage off.
MacDonald, Donald John (Lieutenant)
Survived 1917-January-05

Birth Date: unkown date
Born:
Parents:
Spouse:
Home:
Enlistment:
Enlistment Date: unkown date
Service
RFC
Unit
1 ( (GR) Sqn- Squadron (RFC)
Base
France
Rank
Lieutenant
Position
pilot
Service Numbers
14498