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ASN Wikibase Occurrence # 211539
Last updated: 1 December 2021
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Time:11:50 LT
Type:Armstrong Whitworth Siskin Mk IIIA (DC)
Owner/operator:111 (Treble One) Squadron Royal Air Force (111 (Treble One) Sqn RAF)
Registration: J7553
MSN: AW.137
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:1
Aircraft damage: Written off (damaged beyond repair)
Location:Hinxton Grange, near Duxford, Cambridgeshire -   United Kingdom
Phase: En route
Departure airport:RAF Duxford, Cambridgeshire
Destination airport:
Armstrong Whitworth Siskin IIIDC J7553, 111 (Treble One) Squadron, RAF Duxford: Written off (destroyed) 28/8/25 in a Mid air collision with Another Siskin Mk.IIIA (J7181, also from 111 (Treble One) Squadron RAF) over Hinxton Grange near Duxford, Cambridgeshire. All three crew, two in one aircraft, and one in the other, were killed. Crew fatalities in A.W. Siskin J7553 were:

Flying Officer Harry Butlin (pilot, aged 26) killed
Pilot Officer Dermot De Robeck (aged 18) killed

Pilot Officer Hugh Peck (aged 18) was also killed in A.W.Siskin J7181. Siskin Mk.IIIA (DC) J7553 was the second from last of a batch of six aircraft (J7549-J7554) ordered from Armstrong Whitworth, Whitley, to contract 530519/24, all as Dual Control trainers (Hence the "DC" designation)

According to a contemporary report in "Flight" magazine (September 3, 1925 page 568 - see link #5)

"R.A.F. Flying Accident
THE Air Ministry regrets to announce that, as a result of a collision in the air at Hinxton, Cambridge, between two Siskin machines of No. 111 Squadron, Duxford, on August 28, Flying Officer Harry Butlin, the pilot of one machine, and his passenger, Pilot Officer Dermot de Robeck, were killed. Pilot Officer Hugh Peck, the pilot and sole occupant of the other machine was also killed"


1. The Glasgow Herald - Aug 29, 1925 at,7225590

Revision history:

27-May-2018 20:17 Dr. John Smith Added
27-May-2018 20:18 Dr. John Smith Updated [Narrative]
08-Oct-2018 18:27 Nepa Updated [Operator, Operator]

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