What happened
On 6 January 2006, an Ekolot JK-05 Junior, registration ZU-DVX, departed from Saldanna-Vredenburg Aerodrome for a local pleasure flight. The pilot and a passenger were on board during the daylight operation. Witnesses observed the pilot performing several engine ground runs and even aborting an initial takeoff attempt before the final departure. During the successful takeoff, the aircraft's ground roll was noted as being longer than usual. Shortly after becoming airborne, the aircraft drifted toward the left side of the runway and nose-dived into the terrain approximately 30 meters from the runway edge. The impact was severe enough to break the fuselage in two, resulting in 2 fatalities.
The investigation
The SACAA AIID investigation focused on the mechanical state of the aircraft and the flight conditions. Investigators examined the engine and fuel systems, noting that while no mechanical failures were found within the engine itself, the fuel system showed evidence of severe contamination. The investigation also reviewed the aircraft's weight and balance, calculating that the total mass at takeoff was approximately 625 kg, which significantly exceeded the maximum allowable takeoff weight of 550 kg. Additionally, the investigators looked into the pilot's physical ability to manipulate flight controls and the status of the aircraft's ballistic parachute, which remained unactivated despite being in serviceable condition.
Findings
- The engine failed to generate the necessary power for takeoff because of severe contamination found within the fuel tank and carburetor fuel bowls.
- The aircraft was overloaded by at least 75 kg at the time of departure.
- The aircraft's center of gravity remained within manufacturer limits, but the excessive weight contributed to the failure to gain altitude.
- The pilot held a valid microlight license and medical certificate, with blood alcohol levels within legal limits.