- Date
- December 17, 2017, 15:40 local (23:40 UTC)
- Place
- North Las Vegas, NV
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Taxi
- Aircraft
- N15LUHalley KFT Apollo
- Defining event
- Taxi: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 5, 2018
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20171217023249A
- Case key
- 96497
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot’s failure to stop the main rotor rotation before taxiing the gyroplane in gusting wind conditions, resulting in the main rotor striking the empennage.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
According to the pilot of the experimental amateur-built gyroplane, he landed on a taxiway and taxied to the runway intersection. The intersection was on the right side of runway 30R. The ramp where the pilot wanted to park, was across both runways, on the left side of runway 30L. Unfamiliar with the capabilities of the gyroplane, the tower controller asked the pilot to air taxi to the ramp. The pilot informed the tower controller that he could either ground taxi or takeoff and land on runway 30L then taxi to the ramp. The controller and the pilot agreed to the latter. The pilot further reported that, in anticipation of taxiing to parking, he had allowed the gyroplane's rotor speed to decrease; when he turned the gyroplane back onto the taxiway in the gusting wind, the main rotor struck the empennage and the pusher-propeller. The gyroplane sustained substantial damage to the empennage and rotor system. The METAR at the accident airport reported that about the time of the accident, the wind was from 330° at 14 kts and gusting to 19 kts. The pilot reported that this accident could have been prevented if he had waited for the rotor blades to stop completely before repositioning the gyroplane for taxi. The pilot reported that there were no preaccident mechanical malfunctions or failures with the gyroplane that would have precluded normal operation.
Factual narrative
According to the pilot in the experimental amateur-built gyroplane, he landed on a taxiway and taxied to the runway intersection. The intersection was on the right side of runway 30R. The ramp where the pilot wanted to park, was across both runways, on the left side of runway 30L. Unfamiliar with the capabilities of the gyroplane, the tower asked the pilot to air taxi to the ramp. The pilot informed the tower that he could either ground taxi, or takeoff and land on runway 30L, then taxi to the ramp. Tower and the pilot agreed to the latter. He further reported that in anticipation of taxiing to parking, he had allowed the Gyroplane's rotor speed to decrease, and when he turned the gyroplane back onto the taxiway in the gusting wind, the main rotor struck the empennage and the pusher-propeller. The gyroplane sustained substantial damage to the empennage and rotor system. The METAR at the accident airport reported that about the time of the accident, the wind was from 330° at 14kts and gusting to 19kts. Per the National Transportation Safety Board's Pilot Aircraft Accident Report, the pilot identified in the Owner Safety Recommendation section, that this accident could have been prevented if he had waited for the rotor blades to stop completely before repositioning the gyroplane for taxi. The pilot reported that there were no preaccident mechanical malfunctions or failures with the gyroplane that would have precluded normal operation.
Aircraft
- Registration
- N15LU
- Reported as
- Halley KFT Apollo (AG-01)
- Category
- Gyroplane
- Serial number
- 010416
- Built
- 2016
- Airframe hours
- 13.4
- Engine
- Rotax 912ULS, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Unknown · December 1, 2017
- Departed
- VGT · North Las Vegas, NV
- Destination
- VGT · North Las Vegas, NV
- Airport
- VGT · North Las Vegas
- Equipment
- None
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 56
- Injuries
- None
- Certificates
- Foreign, Private
- Airplane ratings
- Single-engine land
- Medical
- Class 1, Without waivers/limitations
- Seat
- Front
- Restraint
- 4-point
- Flight hours
- 10,151 total · 938 in this make and model · 9,901 as pilot in command · 31 in the last 90 days · 13 in the last 30 days · 0.1 in the last 24 hours
- Role
- Pilot-rated passenger
- Age
- 48
- Injuries
- None
- Certificates
- Flight instructor, Commercial
- Medical
- Class 2
- Last flight review
- January 17, 2018
- Seat
- Rear
- Restraint
- 4-point
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 330° at 14 knots, gusting 19
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 55 °F, dew point 16 °F
- Altimeter
- 30.04 inHg
- Observed at
- KVGT
Docket · 3
The files NTSB released with the investigation on May 14, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.1 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.