A small medical transport plane crashed in Arizona while en route to pick up a patient, killing four people on board.

A medical transport plane crashed and caught fire on the Navajo Nation in northern Arizona, killing four people. The crash Tuesday involving the CSI Aviation company out of Albuquerque, New Mexico, ...

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A crash involving a medical transport plane in northeast Arizona has left four people dead Tuesday afternoon. Officials said ...

The NTSB said crash investigations involve three primary areas: the pilot, the aircraft and the operating environment.