Hi
I don't know the geography in the early 1900's, except Salford is on the right side of Manchester for the now Manchester Airport
have a look at this -
http://en.wikipedia.org/wiki/RAF_Ringway.
this cought my eye
Construction of a Royal Air Force station, including two large hangars, workshops, barrack blocks and ancillary accommodation, began in the northeast corner of the airport during spring 1939, with phased completion during early 1940.[1] One of the hangars was intended for use by No. 613 (City of Manchester) Squadron, but this unit had been moved south at the outbreak of war. RAF Ringway was therefore initially used by No. 1
Operational Training Unit, RAF Coastal Command.
From June 1940, Ringway became the wartime base for No.1 Parachute Training School RAF, which was charged with the initial training of all allied paratroopers trained in Europe (60,000) and for development of parachute drops of equipment; also the development of military gliding operations. Men and women agents of the Special Operations Executive were also trained to jump
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Barton Airport is in the city of Salford and was used during the war for the RAF. Could this be where he served?
http://en.wikipedia.org/wiki/City_Airport_Manchester
dave