History of Flight
On 11 June 2006, at approximately 1010Z, a Robinson R22 helicopter (registration ZS-RMJ) operated by Hover Dynamics was conducting a private visual flight rules (VFR) flight. While flying straight and level, the clutch light came on for longer than normal. The pilot pulled the circuit breaker as per the flight manual and entered an autorotation. The pilot spotted an open field ahead but, due to power lines in front of the helicopter, opted to turn left and executed a forced landing on a street at 7 Tamar Street, Sandown, in the Johannesburg area (S26°05”,430’ E028°04”,251’). The aircraft struck a tree with the main rotor blades and left impact marks on the street surface.
Aircraft Damage
The aircraft sustained minimal damage to the cross tube and main rotor blades due to a hard landing. No other damage was reported.
Injuries
There were no injuries to the pilot or the passenger. The persons on board were one pilot and one passenger.
Meteorological Conditions
At the time of the incident, the wind direction was 270°, wind speed light, temperature 21°C, dew point unknown, cloud cover 7/8, visibility 9999, and cloud base unknown.
Probable Cause
Following the clutch light coming on during flight, the pilot initiated an autorotation which resulted in a hard landing in a street. The clutch actuator was in the initial stages of failure due to a lack of lubrication.