AAIB investigation to AS355F1, G-BOSN
Cabin doors opened in flight, Gunnersbury Park, London, 4 October 2023
During a commercial sightseeing flight, the helicopter’s right cabin doors both opened unexpectedly. Unable to close the doors in flight, the pilot carried out an immediate landing on nearby parkland. Once on the ground he was able to establish the doors had sustained only minor damage and concluded they were likely not to have been securely locked before departure. He re-closed the doors, checked their locking pins were correctly located, and continued the flight as planned.
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