Incident Summary
On 13 August 2021 at 1059 UTC, the DH82A Tiger Moth, registration G-AXBW, was involved in a ground collision at Malshanger Estate Airstrip in Hampshire. The aircraft, after an engine start procedure, moved forward and struck two other Tiger Moths that were parked nearby.
Details
According to the AAIB bulletin, the pilot started the engine by hand-swinging the propeller. Shortly after, the engine revolutions per minute (rpm) unexpectedly increased. The aircraft had not been chocked prior to the start, as the pilot had omitted this step. Consequently, the Tiger Moth moved forward and collided at low speed with two other Tiger Moths that were parked in the vicinity.
Corrections
The AAIB originally reported a collision with a single aircraft, but later corrected the bulletin to reflect that two aircraft were involved. The amended report was published on 9 December 2021.
Safety Message
The pilot noted that the safety lesson from this event is to ensure that the aircraft is chocked before starting the engine.