At about 1030 Central time, the airplane sustained substantial damage during an uncontrolled descent and recovery from cruise flight at FL270. Visual conditions prevailed. The flightcrew subsequently reported depressurizing the airplane after its windshield began cracking. They donned oxygen masks but were unable to obtain oxygen from the system, resulting in loss of consciousness. They later regained consciousness, recovered from the descent, and landed without further incident. The pilot and copilot were uninjured. Approximately
February 2, 2007, Cape Girardeau, Mo., Beech/Raytheon B200 King Air
At about 1030 Central time, the airplane sustained substantial damage during an uncontrolled descent and recovery from cruise flight at FL270. Visual conditions prevailed. The flightcrew subsequently reported depressurizing the airplane after its windshield began cracking. They donned oxygen masks but were unable to obtain oxygen from the system, resulting in loss of consciousness. They later regained consciousness, recovered from the descent, and landed without further incident.
Key Takeaways:
- An aircraft sustained substantial damage, including structural separation of parts of the horizontal stabilizer and elevator, during an uncontrolled descent from FL270 after the crew intentionally depressurized due to a cracking windshield.
- The flightcrew reported losing consciousness after allegedly being unable to obtain oxygen from their system but subsequently regained awareness, recovered the aircraft, and landed safely without injury.
- Post-incident investigation revealed that the oxygen system was functional when tested and the cabin pressurization dump switch was found in the dump position, contradicting the crew's account of oxygen system failure.
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