Sequence of Events
Following departure from Juba Airport, the aircraft climbed to approximately 300 feet above ground at a speed of 155 knots. During this initial climb, engine number 4 experienced a loss of power. The flight crew decided to return for an emergency landing. During the return, engines number 1 and 2 oversped. While the aircraft executed a turn to align with runway 31, engine number 3 lost power and its propeller was feathered.
Despite these difficulties, the crew successfully landed the aircraft on the runway. However, after touchdown, the aircraft was unable to stop within the remaining runway distance. It veered off the runway and subsequently collided with cargo containers, causing a fire to erupt. All five occupants evacuated the aircraft without injury.
Investigation Findings
The official investigation determined that the exact cause of the engine problems could not be established with certainty. However, the possibility that the fuel was contaminated by water was not ruled out.