ALEX MICHAEL BANTUM/TERCEL USA TERCEL-GYROPLANE
Blairstown, NJ — September 17, 2016
Event Information
| Date | September 17, 2016 |
| Event Type | ACC |
| NTSB Number | GAA16CA499 |
| Event ID | 20160922X20919 |
| Location | Blairstown, NJ |
| Country | USA |
| Coordinates | 40.97111, -74.99750 |
| Airport | BLAIRSTOWN |
| Highest Injury | NONE |
Aircraft
| Make | ALEX MICHAEL BANTUM/TERCEL USA |
| Model | TERCEL-GYROPLANE |
| Category | GYRO |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 1 |
| Total Injured | 0 |
Event Location
Probable Cause
The student pilot’s incorrect takeoff procedure, which resulted in a loss of main rotor rpm and the subsequent loss of directional control and runway excursion.
Full Narrative
According to the solo student pilot, the experimental amateur built gyrocopter was positioned for takeoff on the runway, and stopped with the brakes set.
He recalled that he engaged the pre-rotor, increased the main rotor speed to 180 revolutions per minute (rpm), then disengaged the pre-rotator, released the brake, and applied full throttle.
He reported that, "this is where I made my mistake. At this point I should have brought the control stick all the way back, but did not." He recalled that the gyrocopter was moving forward rapidly, but the rotor rpm decreased, and he then pulled the control stick aft. He reported that the rotor blades were flapping, the control stick became uncontrollable, and the gyrocopter exited the runway to the left.
The student pilot reduced the throttle to idle, and during the runway excursion the left main and the nose landing gear separated from the gyrocopter. The main rotor blade struck the ground, the blade grip sustained substantial damage, and the rotor head partially separated from the frame.
The student pilot reported that there were no mechanical malfunctions or anomalies with the airframe or the engine that would have prevented normal flight 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.