On December 17, 2012, an Antonov AN-26 (registration OB-1887-P) operated by Amazon Sky was involved in an aviation accident near Tomas, Peru in flight. 4 people were killed. Investigators recorded the probable cause as: Both engines failed in flight due to icing accumulation and inappropriate use of the deicing systems. Contributory factors: poor flight planning, poor crew resource management, poor simulator training, lack of procedures, marginal weather. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).
A cargo flight from Lima to Las Malvinas crashed near Tomas after both engines failed due to icing. All four occupants were killed. Official findings cite icing accumulation and inappropriate deicing system use.
Accident Overview
On a cargo flight from Lima-Jorge Chávez Airport to Las Malvinas (Sabeti), the aircraft departed at 1009 local time for a 78-minute flight. Approximately 32 minutes into the flight, while overflying the Andes mountains at FL195, the crew lost control of the aircraft. The wreckage was found the following day in a mountainous area near Tomas. All four occupants were killed.
Official Findings
The investigation determined the probable cause to be both engines failing in flight due to icing accumulation and inappropriate use of the deicing systems. Contributory factors include:
Poor flight planning on part of the crew,
Poor crew resource management,
Poor crew simulator training (specifically for icing detection and dual engine failure),
Lack of procedures relating to icing conditions and dual engine failure,
Marginal weather conditions which contributed to ice accumulation on engines and airframe.
