Air Commodore Charles Beresford Eaton Burt-Andrews (37379) has entry on Malcolm's Air of Authority Page

4 Apr - 13 Dec 1938: Attached to Aircraft Depot as Instructor to pilots for the Afghan Air Force

xx xxx - 16 Apr 1939: Attached to AFS Ambala as Instructor with Afghan Training Flight

Dates confirmed as

December 15th 1938 - April 15th 1939