What happened
On 12 June 2006, a Bell 206B III, registration ZS-HIA, was conducting a private flight from Nelspruit Aerodrome toward a residence at Lake Longmere Country Estates. The pilot was attempting to land at a designated zone adjacent to a lake approximately 10km north of White River.
At the time of the incident, the area was experiencing a power failure, leaving the landing site without any surface lighting to assist with navigation. During the final approach, the pilot flew over the residence and turned right to position the aircraft for landing. While flying west over the water with the landing light active, the pilot lost visual contact with the ground. This led to a loss of control, causing the aircraft to strike the water roughly 100m from the shoreline. The impact caused the helicopter to invert and sink immediately. The pilot successfully escaped the cockpit and swam to the shore.
The investigation
Investigators examined the circumstances surrounding the flight and the condition of the aircraft. The helicopter was recovered from the lake the following day using a flotation method and a boat tow. During the impact, the main rotor assembly was severed from the drive shaft and was not recovered. Records indicated that the aircraft's last Mandatory Period Inspection had been completed on 26 May 2006, with only 28.9 flight hours accumulated since that inspection.
Findings
- The pilot experienced spatial disorientation after losing visual reference to the surface during a night approach.
- The absence of ground lighting due to a local power outage contributed to the difficulty of the approach.
- Although the pilot held a commercial license, he did not possess a night rating, meaning he was not legally rated to conduct flight operations at night.