Incident Overview
While cruising at 2,500 feet with no passengers on board, the co-pilot heard a loud hissing noise near the main cabin door. He checked the door handle and locking pins, confirming the door was locked. He then informed the captain, who instructed the co-pilot to take control of the aircraft while the captain went to investigate.
Door Opening and Captain's Response
The captain reported that he may have bumped the door, causing it to open. As the door swung outward, the captain became entangled in the door cables but remained with the aircraft. He sustained minor injuries.
Emergency Landing and Aftermath
The co-pilot declared an emergency and executed an uneventful landing. Following the incident, the door was examined and no mechanical problem was found. The aircraft was returned to service without any repairs.
Manufacturer's Statement
Beech Aircraft Company noted that at 200 knots true airspeed and 2,500 feet, a force of 127 pounds would be required to pull the door outward. The flight crew had reported that the aircraft was in normal cruise when the door opened.