Thunder & Lightnings

Test Flying Memorial

"...and everywhere the
blue sky belongs to them
and is their appointed rest
and their native country"
- Samuel Taylor Coleridge


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Date27/09/1946
CasualtiesGeoffrey R. de Havilland OBE, de Havilland Aircraft CTP
Aircraftde Havilland D.H.108 TG306
Took off fromHatfield, Hertfordshire
Purpose of flightInvestigating aircraft's controllability close to the speed of sound at low altitude (5,000ft) in preparation for an attempt on the world speed record
Incident locationEgypt Bay, Thames Estuary off Kent coast
Incident detailsDiving from 10,000ft, an airspeed of 654 m.p.h. at 5,000ft was attained but the aircraft encountered violent divergent instability and broke up, both wings detaching


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