2 fatalities

Twin-engine training aircraft crashes after striking barrage balloon moorings near Gosport (G-AFFM)

Gosport, United KingdomFlight

On November 20, 1939, an Airspeed AS.10 Oxford (registration G-AFFM) operated by British Airways (1935) was involved in an aviation accident near Gosport, United Kingdom in flight. 2 people were killed. Investigators recorded the probable cause as: Loss of control resulting from an in-flight collision with a barrage balloon. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-08-04Data APIEditorial standards

A twin-engine aircraft departed Heston for a training flight but collided with barrage balloon moorings over Gosport, resulting in the deaths of both crew members.

What happened

The incident involved a twin-engine aircraft operating out of Heston. The crew was conducting a routine training exercise when the aircraft reached the cruising phase over the area near Gosport. During this segment of the flight, the airframe made contact with the mooring lines of a barrage balloon. This impact caused the aircraft to lose aerodynamic control immediately. Unable to recover, the plane descended rapidly and impacted the ground in a significant explosion. Both individuals on board were killed in the crash.

Findings

The official investigation determined that the accident was triggered by an in-flight collision with a barrage balloon. The primary contributing factor was the loss of control sustained following this impact, which made it impossible for the crew to maintain flight stability or avoid the ground.

Probable cause

Loss of control resulting from an in-flight collision with a barrage balloon.