Emergency personnel respond to a commercial building where a small plane crashed on Jan. 2, 2025, in Fullerton, Calif.

The NTSB said in its preliminary report that the pilot had made a “series of modifications” to the plane doors, which affected its “indicator system” Kimberlee Speakman is a digital writer ...

The plane’s door appeared ajar after takeoff from Fullerton Airport, shortly before the plane crashed into a warehouse. Investigators found that the door to the plane had been modified.

How Did the Fullerton, California, Plane Crash Happen? According to a preliminary report from the NTSB, the crash resulted from a faulty door. “Once the airplane had departed the runway ...