5 fatalities

Aircraft crash on Mount Antococha near Casapalca (FAP377)

Casapalca, PeruFlight

On July 3, 1984, an Antonov AN-26 (registration FAP377) operated by Peruvian Air Force - Fuerza Aérea del Perú was involved in an aviation accident near Casapalca, Peru in flight. 5 people were killed. Investigators recorded the probable cause as: The aircraft was flying at an altitude too low to safely clear the terrain of Mount Antococha. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards

An aircraft crashed into Mount Antococha in Peru, resulting in the deaths of all five crew members on board.

What happened

On an unspecified date, an aircraft crashed into the terrain of Mt Antococha, situated near Casapalca, approximately 100 km northeast of Lima. The impact occurred during a period when the aircraft was operating at an altitude that was deemed insufficient for the surrounding topography.

There were no passengers reported on the flight, and all five crew members perished in the accident. The specific circumstances leading to the crash remain undetermined.

Findings

Investigations into the event indicate that the aircraft was maintaining an insufficient altitude during its flight phase, which contributed to the impact with the mountain.

Probable cause

The aircraft was flying at an altitude too low to safely clear the terrain of Mount Antococha.