- Date
- May 13, 2017, 18:20 local (23:20 UTC)
- Place
- Weatherford, TX
- Injuries
- 2 serious
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N616NGPipistrel Doo Ajdovscina Virus SW
- Defining event
- Takeoff: Aerodynamic stall/spin
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 5, 2018
- Report
- Approved by Office Director
- NTSB office
- Central Region
- Parties
- FAA
- FAA report
- 20170513009689A
- Case key
- 95171
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 obtain adequate airspeed during takeoff, which resulted in an aerodynamic stall/spin.
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
The private pilot reported that, during departure for the planned local flight in a motorized glider, just as the nosewheel lifted off, a wind gust from the left pushed the motorized glider to the right. The pilot pulled back on the control stick to climb and simultaneously applied left rudder and aileron. The pilot added that the motorized glider became airborne, but the airspeed was insufficient, and it then entered a "stalled left spin." An automated weather reporting facility located 7 nautical miles south of the accident site recorded that the wind was from 160°at 4 knots. The accident is consistent with the pilot failing to obtain adequate airspeed at takeoff, which resulted in the motorized glider entering an aerodynamic stall/spin immediately after takeoff.
Factual narrative
On May 13, 2017, about 1820 central standard time, a Pipistrel Virus SW motorized-glider, N616NG, impacted terrain while departing the Driftwood Ranch Airport (XA86), Weatherford, Texas. The pilot and passenger were seriously injured. The motorized-glider was registered to and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which operated without a flight plan. The local flight was departing at the time of the accident.According to a statement provided by the pilot, he was departing on runway 16, at XA86. After reaching rotation speed, the pilot rotated the motorized-glider and the nosewheel lifted off when a gust of wind from the left, pushed the motorized-glider to the right. The pilot added that he pulled back on the control stick to climb, and simultaneously added left rudder and aileron. As the motorized-glider got airborne, the pilot reported that the airspeed was insufficient, and the motorized-glider entered a stall-spin. After a quarter turn, the motorized-glider impacted terrain. The collision resulted in substantial damage to the glider's fuselage and wings. At 1815, an automated weather reporting facility located 7 nautical miles south of the accident site recorded a wind from 160 degrees at 4 knots.
Aircraft
- Registration
- N616NG
- Reported as
- Pipistrel Doo Ajdovscina Virus SW (NO SERIES)
- Category
- Glider
- Serial number
- 742SWN100
- Built
- 2015
- Engine
- Rotax 912ULS, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Departed
- XA86 · Weatherford, TX
- Destination
- XA86 · Weatherford, TX
- Airport
- XA86 · Driftwood Ranch, runway 16, 2,975 × 40 ft, asphalt
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
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 47
- Injuries
- Minor
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Without waivers/limitations
- Seat
- Left
- Flight hours
- 780 total · 231 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 160° at 4 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F, dew point 48 °F
- Altimeter
- 29.88 inHg
- Observed at
- KGDJ, 7 nm away
Docket · 1
The files NTSB released with the investigation on March 15, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 176 KB 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.