Mexicana de Aviación Flight 940

Mexicana de Aviación Flight 940 was a scheduled international flight from Mexico City to Los Angeles with stopovers in Puerto Vallarta and Mazatlán. On March 31, 1986, the aircraft serving the route, a Boeing 727 registered as XA-MEM, crashed into El Carbón, a mountain in the Sierra Madre Occidental mountain range northwest of Mexico City.

Source: Wikipedia — Mexicana de Aviación Flight 940 (CC BY-SA 4.0)