- Date
- August 1, 2013, 07:20 local (13:20 UTC)
- Place
- West Yellowstone, MT
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N926BWBellanca 7GCBC
- Defining event
- Takeoff: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 5, 2013
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- FAA FSDO
- FAA report
- 20130801014789A
- Case key
- 87704
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 maintain directional control during the takeoff roll, which resulted in a runway excursion and a collision with an approach slope indicator system component.
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 pilot and the pilot-rated passenger planned to conduct a personal flight in the tailwheel-equipped airplane. The pilot was in the rear seat, and the passenger was in the front seat. The passenger did not have a tailwheel endorsement, but he planned to follow the pilot on the controls during the takeoff for familiarization purposes. During the takeoff roll when the airplane was approaching liftoff speed, the airplane made a rapid veeroff to the left. At that point, the pilot abandoned the takeoff, and made the conscious decision not to attempt to return to the runway, instead allowing the airplane to roll and decelerate on the grass/gravel beside the runway. That decision was based on the pilot's desire to avoid any potentially hazardous maneuvering or a ground loop. During the rollout, due to the pilot's inability to see directly ahead, the airplane struck the VASI (visual approach slope indicator) installation located about 1,300 feet down the runway, and offset about 145 feet from the runway centerline. The airplane sustained substantial damage to the left wing struts. The pilot stated that he did not believe that any mechanical malfunction or failure contributed to or caused the runway excursion, and that he could not rule out the possibility that he had inadvertently applied one wheel brake during the takeoff roll.
Factual narrative
The pilot and the pilot-rated passenger planned to conduct a personal flight in the tailwheel-equipped airplane. The pilot was in the rear seat, and the passenger was in the front seat. The passenger did not have a tailwheel endorsement, but he planned to follow the pilot on the controls during the takeoff for familiarization purposes. During the takeoff roll when the airplane was approaching liftoff speed, the airplane made a rapid veeroff to the left. At that point, the pilot abandoned the takeoff, and made the conscious decision not to attempt to return to the runway, instead allowing the airplane to roll and decelerate on the grass/gravel beside the runway. That decision was based on the pilot's desire to avoid any potentially hazardous maneuvering or a ground loop. During the rollout, due to the pilot's inability to see directly ahead, the airplane struck the VASI (visual approach slope indicator) installation located about 1,300 feet down the runway, and offset about 145 feet from the runway centerline. The airplane sustained substantial damage to the left wing struts. The pilot stated that he did not believe that any mechanical malfunction or failure contributed to or caused the runway excursion, and that he could not rule out the possibility that he had inadvertently applied one wheel brake during the takeoff roll.
Aircraft
- Registration
- N926BW
- Reported as
- Bellanca 7GCBC
- Category
- Airplane
- Serial number
- 770-74
- Airframe hours
- 3,092
- Engine
- Lycoming O-320-A2D, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · March 1, 2013 · 3,092 hours before
- Departed
- KWYS · West Yellowstone, MT
- Destination
- KWYS · West Yellowstone, MT
- Airport
- KWYS · West Yellowstone, runway 19, 8,400 × 150 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
- 63
- Injuries
- None
- Certificates
- Airline transport, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Without waivers/limitations
- Last flight review
- June 7, 2013
- Seat
- Rear
- Flight hours
- 7,100 total · 450 in this make and model · 6,960 as pilot in command · 50 in the last 90 days · 30 in the last 30 days · 0 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 170° at 3 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 50 °F, dew point 45 °F
- Altimeter
- 30.20 inHg
- Observed at
- KWYS
Docket · 5
The files NTSB released with the investigation on August 22, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.