On Friday, 4th May 1917 this No.15 Reserve Squadron, Royal Flying Corps aeroplane suffered the engine fail on take off from the aerodrome at Doncaster, the pilot attempted to turn back to the aerodrome but lost control and the aeroplane spun into the ground from between 200 and 250 feet at 19.10hrs killing both men flying in it.
Pilot (instructor?) - 2Lt Cyril Harvey Trollope RFC, aged 20. Buried Bromley (Plaistow) Cemetery, Kent.
Pilot (pupil) - 2Lt Anthony Steel Caldwell RFC, aged 26. Buried Doncaster (Hyde Park) Cemetery, South Yorkshire.
Cyril Trollope was born on 30th January 1897 at Glasgow and was the son of John Basil and Euphemia Trollope. His father was a stockbroker. Cyril was educated at Fettes College, Edinburgh. The family appear to have moved to Bromley, Kent and Cyril joined the London Regiment in 1915 before transferring into the RFC.
Anthony Caldwell was born on 21st January 1892 and was the son of Steel and Lillian Caldwell, of Young, New South Wales, Australia. He appears to have left Australia and sailed to England under his own means in August 1916 specifically to join the Royal Flying Corps. He enlisted on 1st September 1916.