What happened
Shortly after departing from Acapulco-General Juan N. Álvarez Airport, the aircraft was maintaining a cruising altitude of 31,000 feet when a sudden decompression occurred within the cabin. In response to this emergency, the crew initiated an emergency descent and requested permission to return to the departure airport for an unplanned landing.
During the descent, while the aircraft was at approximately 6,000 feet, it collided with a mountain slope located in the Sierra de Guerrero, roughly 65 km east of Zihuatanejo. The force of the impact caused the airplane to disintegrate. There were 18 fatalities among the occupants of the flight.
Findings
Investigations into the accident highlighted two primary issues. While the specific origin of the cabin decompression has not been determined, it was noted that the crew did not adhere to established emergency protocols during the descent.