On 17 December 2012, an Antonov AN-26 cargo aircraft operated by Amazon Sky was flying from Jorge Chávez International Airport in Lima to Las Malvinas Airport in the Cuzco Province, Peru with 4 crew when it experienced a dual engine failure due to icing and crashed into mountainous terrain in the Tomas District of Yauyos Province, Peru, killing all occupants.

[2] The aircraft had been flying from Peru's capital of Lima to an airfield of the Argentinian company Pluspetrol in the Cusco Region and was carrying a crew of 4 people.

The accident occurred at about 15:42 local time as the aircraft firstly touched a mountain peak, then crashed in steep terrain.

The investigation commission found that failure of both engines due to ice had caused the crash.

[2] The report of the investigation commission also found other contributory factors all focused on the crew's mistakes which are specifically poor planning and lack of an appropriate procedure in the checklist (Failure and re-ignition of two engines) also bad weather condition is contributed.