皇冠体育app

Summary:

皇冠体育app aircraft鈥檚 lower cabin door came open in flight when a screw forming part of the door鈥檚 forward latching mechanism fractured. 皇冠体育app aircraft landed safely and the investigation determined that the cabin door鈥檚 rear latch was probably not locked when the cabin door was closed, allowing the door to open when the screw fractured. 皇冠体育app screw had not been securely fastened and was loose, which contributed to a fatigue failure of the screw. 皇冠体育app operator has taken a number of safety actions intended to detect unsafe conditions of the cabin doors on its PA-31 fleet.

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