It emerged that Douglas engineers had known the design was vulnerable to a catastrophic failure, and indeed, two years earlier, a near disaster had ensued on a flight over Windsor, Ontario, which also lost a cargo door. The pilot had been able to land the plane in that case. Instead of fixing the issue immediately, McDonnell Douglas had convinced the FAA to let it add a support plate over time to the doors—a “gentlemen’s agreement” revealed in the congressional hearings.
