What happened
On 10 January 2007, a Piper PA30, registration ZS-NTF, was conducting a private flight under visual flight rules (VFR) from Wonderboom Aerodrome (FAWB) in Gauteng Province. The flight, which included the pilot and one passenger, involved local maneuvers in the general flying area before the aircraft returned to the aerodrome for landing.
During the final approach to runway 29, the pilot reported that the cockpit indicators showed the undercarriage was down and locked. However, approximately 100 meters after the aircraft touched down, the landing gear collapsed. This caused the aircraft to skid along the runway on its belly. The impact resulted in substantial damage to the propeller blades, engine cowlings, landing-gear doors, and the aircraft belly. Both occupants exited the aircraft safely without injury.
The investigation
SACAA AIID investigators examined the wreckage and the aircraft's mechanical systems. During the investigation, the aircraft was lifted and the landing gear was tested using manual extension and electric power. The testing confirmed that the gear could drop freely and lock into position, with the three green 'DOWN AND LOCKED' lights illuminating correctly.
Technical inspections revealed no mechanical failures, deficiencies in the landing gear system, or issues with the rigging or oleo extension. Furthermore, the investigation found no discrepancies in the aircraft's maintenance records regarding the most recent periodic inspection. It was also noted that the aircraft had a history of three previous wheels-up landing accidents during its time in Zimbabwe.
Findings
- The weather conditions at the time of the accident were clear with good visibility.
- The pilot held a valid commercial license and the necessary type ratings.
- The investigation found no mechanical fault within the landing gear system or its components.
- The aircraft's Certificate of Airworthiness was not valid at the time of the accident.