What happened
On 1 October 2010, a Bantam B2 2J microlight, registration ZU-CYX, was conducting a private daytime flight under visual flight rules from Nelspruit aerodrome to Wonderboom aerodrome. The flight was accompanied by one passenger. While traversing a valley at approximately 4,000 feet above mean sea level, the aircraft encountered a downdraft that significantly reduced its altitude. In an attempt to avoid a ridge ahead, the pilot initiated a 180-degree turn. During this maneuver, the aircraft lost airspeed, entered a left-hand spin, and struck the ground in a bushy area near the Schoemanskloof national road. Both occupants sustained minor injuries and were able to exit the wreckage unassisted before being airlifted to a hospital.
The investigation
An investigation by the SACAA AIID examined the wreckage, maintenance records, and meteorological conditions. The inspection of the Bantam B22J revealed that the aircraft was well-maintained, having undergone an annual inspection only five hours prior to the accident. The engine, propeller, and control surfaces were found to be in functional condition, with no evidence of structural failure or mechanical malfunction. The investigation also confirmed that the aircraft was within its maximum takeoff weight and that the pilot held a valid commercial license and medical certificate. Weather conditions at the time were reported as clear with good visibility.
Findings
- The primary cause of the accident was the pilot's failure to maintain control of the aircraft.
- A contributing factor to the loss of control was poor airmanship during the recovery maneuver.
- The aircraft was subjected to a downdraft that necessitated an immediate change in flight path.
- The aircraft was operating within all weight and maintenance parameters at the time of the incident.