Narrative:

Main cockpit door popped open on the top latch during climb. Dealing with the distraction of the door and deciding on action to be taken regarding the door a level off at 5000 was missed until the controller questioned the altitude. A descent to 5000 from 5400 was made immediately. Moments later the lower latch on the door released and the door opened violently at which time an emergency was declared and a landing was made at a nearby airport.

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Original NASA ASRS Text

Title: A BE58 Pilot declared and emergency and diverted to a nearby airport when the cabin door opened in flight. The distraction which resulted contributed to a momentary altitude deviation brought to the pilot's attention by ATC.

Narrative: Main cockpit door popped open on the top latch during climb. Dealing with the distraction of the door and deciding on action to be taken regarding the door a level off at 5000 was missed until the controller questioned the altitude. A descent to 5000 from 5400 was made immediately. Moments later the lower latch on the door released and the door opened violently at which time an emergency was declared and a landing was made at a nearby airport.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.