Aircraft
The aircraft involved was a McDonnell Douglas DC-9-32, delivered to Aeroméxico in 1974 and named Tijuana. It was powered by two Pratt & Whitney JT8D-17 turbofan engines.
Accident
Aeroméxico Flight 110 was a scheduled domestic commercial flight from Acapulco to Guadalajara. After departing Acapulco and reaching an altitude of 31,000 feet (9,400 m), the captain reported to air traffic control that the cabin had depressurized and requested a return to Acapulco for an emergency landing. The crew initiated an emergency descent. At 6,000 feet (1,800 m), the aircraft crashed into the Sierra de Guerrero mountains. All 18 people on board died.
Investigation
The investigation determined that the crew had failed to follow the emergency procedures.