It was amalgamated from various Rockcliffe based flights on 29 January 1936 at RCAF Station Rockcliffe near Ottawa, Ontario, as No. 7 (General Purpose) Squadron and was disbanded on 10 September 1939 to allow its personnel to bring more critical combat units up to strength with the start of the Second World War.[2]
2 Non-standard code as unit using OW added L. Letters normally denoted parent Command, aircraft type (L Liberator transport, D Dakota etc), unit, and individual aircraft.
3 VCXXA where VC was the civil code used by the RCAF replacing CF-, XX was the unit code and A was the aircraft ID letter
4 XXnnn where XX was the unit code and nnn was the last 3 digits of the serial number. Unit code was replaced with "RCAF" in 1958