What happened
On 13 March 2010, a Quick R microlight, registration ZU-KKW, departed from Rietfontein private airstrip for a private flight. The pilot and one passenger intended to return to the original departure point; however, during the flight, weather conditions deteriorated as winds increased. In response to the strengthening winds, the pilot decided to perform a precautionary landing at Aeroden private airstrip in the Magaliesberg region.
As the aircraft approached the grass runway from the north, the pilot encountered sudden wind shear immediately before touchdown. This atmospheric disturbance caused the nose and the right wing of the aircraft to drop abruptly. The nosewheel made heavy contact with the ground, and the aircraft subsequently veered to the right of the airstrip. Both occupants of the aircraft escaped without injury.
The investigation
SACAA AIID investigators examined the circumstances surrounding the landing and the mechanical state of the aircraft. The investigation confirmed that the pilot held a valid microlight license and was properly rated for the operation. Maintenance records indicated that the Quick R had been properly maintained, with its most recent annual inspection completed in September 2009. The aircraft's authority to fly was also valid at the time of the incident.
Findings
- The primary cause of the accident was wind shear occurring just prior to touchdown.
- This sudden change in wind caused the nose and right wing to dip unexpectedly.
- The impact of the nosewheel with the ground led to a loss of directional control, resulting in the aircraft veering off the runway.
- The deteriorating weather conditions prompted the initial decision to divert to Aeroden.