History of Flight
On 10 January 2007, a Piper PA30 (registration ZS-NTF) departed from Wonderboom aerodrome (FAWB) on a private flight under visual flight rules. The pilot reported an uneventful flight. Upon returning to Wonderboom, the pilot descended to join the downwind leg for runway 29 and was cleared for landing by air traffic control. During final approach, approximately 500 feet above ground level, the pilot stated that the three green indicator lights for landing gear down and locked were illuminated. Approximately 100 meters after touchdown, the landing gear collapsed, and the aircraft skidded along the runway on its belly. The aircraft came to rest, and the passenger exited safely. The pilot shut off electrical switches and fuel selectors before exiting. Neither the pilot nor the passenger sustained injuries.
Aircraft Damage
The propeller blades, aircraft belly, both engine cowlings, and the landing-gear doors sustained substantial damage. No other damage was caused. The aircraft was later recovered and tested.
Investigation Findings
The landing gear system was examined with the assistance of maintenance personnel. The aircraft was lifted and the landing gear dropped freely into the down position and locked using manual extension, with corresponding gear down indications. No mechanical failure was found in any landing gear components, and the rigging was correct. The aircraft was placed on jacks, and electric power was connected; the landing gear system was lubricated, tested, and found fully serviceable, with the three green indicator lights illuminating. Both engines were inspected and repaired due to sudden stoppage, and propellers were replaced. A ground run and test flight with touch-and-go landings revealed no anomalies, and the aircraft was returned to service.
Probable Cause
It is probable that the pilot failed to lower the landing gear before landing.
Additional Information
The aircraft had a history of three previous wheels-up landing accidents in Zimbabwe (May 1986, April 1990, and August 1995). The pilot held a commercial pilot license with 724 total flying hours and 29.9 hours on type. The weather was fine with clear skies and visibility 10 km. The accident occurred during daylight conditions.