The pilot and passengers of a small aircraft that became unresponsive to air traffic control and triggered panic after flying over the U.S. Capitol complex were likely incapacitated by a lack of oxygen, according to a final report released by the National Transportation Safety Board this week.
The oxygen problem was caused by a loss of cabin pressure during the flight, the NTSB said. The aircraft, an 11-seat Cessna 560 Citation V, had a number of issues related to its pressurization and environmental control systems, including a copilot oxygen mask overdue for inspection, and there is no indication those problems were addressed before its final flight and crash, which killed all four people on board.
