What happened
During a flight lasting roughly forty minutes, the crew encountered significant technical difficulties when both the number 1 and number 3 engines ceased functioning. Following this dual engine failure, air traffic control authorized the aircraft to perform an emergency return to Luanda-4 de Fevereiro Airport.
While the aircraft was descending through 800 metres at a speed of 350 km/h, it began a descent rate of 3 metres per second. The aircraft subsequently impacted the ground approximately 80 km north of Luanda. The impact and subsequent fire resulted in the total destruction of the airframe. There were 13 fatalities among the occupants of the aircraft.
Findings
Official investigations suggest that the loss of power in both engines may have been triggered by a bird strike occurring after the flight departed from Luanda Airport.