WPR13CA362

NTSB accident investigation · Bellanca 7GCBC · West Yellowstone, MT · August 1, 2013

Accident · No injuriesData collectionFinal report
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.

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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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedBellanca 7GCBC: 19 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBellanca 7GCBC: 33 casesAll aircraft: 9,295 casesProbable cause

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.