Flight 901 originated at
Miami International Airport in
Miami, United States and its destination was
Juan Santamaría International Airport in
San José, Costa Rica; it had three stopovers on its route:
La Aurora International Airport in
Guatemala City, Guatemala,
Comalapa International Airport in
San Salvador, El Salvador, and
Augusto C. Sandino International Airport in
Managua, Nicaragua. Its departure from Guatemala City was delayed by 2 hours, taking off at 6:20 p.m.
CST. Due to heavy rain and thunderstorms in the area, the captain deviated from the standard approach to Comalapa International Airport: Airway G346. The captain sought to intercept the ILS glide slope for Runway 07 rather than the typical ILS glide slope for Runway 25. south from the municipality of
Tepetitán, Rescue vehicles were unable to reach the crash site due to poor road conditions and fog also prevented helicopters from reaching the site. The crash site spanned a area at an altitude of
MSL. Local police officer José María Gómez stated that "There were corpses wherever you looked, and body parts everywhere [...] on the rocks and in the trees. The plane was totally destroyed". Locals in the vicinity of the crash reported hearing three loud explosions and that they witnessed fire in the sky, with some believing that the San Vicente volcano was erupting. Gladys Miranda de Valencia, the captain's sister, reported that Aviateca had told her that the captain had informed the airline of "unspecified mechanical problems" prior to the accident. Aviateca president Frederick Melville initially attributed the crash to bad weather, and Aviateca spokesman Mauricio Rodríguez stated that it was raining "very, very hard" at the time of the accident. == Cause ==