What happened
On 1 November 2008, a chartered flight departed from Wonderboom Aerodrome, destined for Njala Lodge in the Limpopo Province. The aircraft, a Cessna 208B with registration ZS-PCM, was carrying a pilot and five passengers. Upon arrival at the destination, the pilot utilized coordinates that were insufficient for precise navigation, leading to an arrival at the wrong landing strip. The pilot chose a runway located on a ridge, mistakenly believing a parked vehicle indicated the correct location for passenger pickup.
After realizing the error, the pilot attempted a second take-off from the incorrect runway. During this attempt, the aircraft failed to gain sufficient altitude, prompting the pilot to abort the take-off. During the subsequent landing sequence, the aircraft drifted to the left side of the runway and struck a large rock, a telephone pole, associated wires, and a wire fence. The impact triggered a fire, causing substantial damage to the aircraft's wings, propeller, and landing gear. The aircraft finally came to a rest only five meters away from high-tension wires.
The investigation
SACAA AIID investigators examined the navigational data and environmental conditions at the time of the incident. The investigation established that the coordinates provided by the lodge placed the pilot on a ridge containing two separate runways, causing confusion. Meteorological data indicated wind conditions that could have contributed to the loss of lift. The investigation also confirmed that the aircraft was properly maintained and the operator held a valid Part 135 Operating Certificate. The pilot held a valid commercial medical certificate at the time of the occurrence.
Findings
- The use of imprecise coordinates resulted in the aircraft landing on the wrong aerodrome.
- The pilot failed to perform an adequate assessment of wind conditions prior to the second take-off attempt.
- A possible downdraft likely prevented the aircraft from gaining necessary height.
- The pilot failed to maintain directional control during the aborted take-off, leading to the collision with ground obstacles.