SCHWEIZER 269C
Grand Forks, ND — September 22, 2014
Event Information
| Date | September 22, 2014 |
| Event Type | ACC |
| NTSB Number | CEN14CA513 |
| Event ID | 20140923X00810 |
| Location | Grand Forks, ND |
| Country | USA |
| Coordinates | 47.95278, -97.17555 |
| Airport | GRAND FORKS INTL |
| Highest Injury | NONE |
Aircraft
| Make | SCHWEIZER |
| Model | 269C |
| Category | HELI |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 2 |
| Total Injured | 0 |
Probable Cause
The flight instructor's inadequate supervision and delayed remedial action during a practice autorotation, which resulted in a tail rotor strike.
Full Narrative
The pilot receiving instruction was performing a practice 180-degree autorotation. Just prior to touchdown, the flight instructor perceived an abrupt loss in altitude, followed by a hard landing and tail rotor strike, which substantially damaged the tail rotor. The flight instructor reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.