SEA96LA179

NTSB accident investigation · Stinson 108-3 · Culbertson, MT · August 6, 1996

Accident · No injuriesLimited investigationFinal report
Date
August 5, 1996, 18:30 local (Aug 6, 1996, 00:30 UTC)
Place
Culbertson, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
CGYYFStinson 108-3
Weather
Visual (VMC) · Day
Status
Completed · report May 23, 1997
Report
Approved by Office Director
Case key
42437

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 inadequate compensation for wind conditions, which resulted in a loss of directional control; and her inadequate remedial action for gusty winds after the aircraft departed the runway. Factors relating to the accident were: the strong and gusty crosswinds.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterLanding - roll
Weather condition - crosswindFactor
Weather condition - high windFactor
Weather condition - gustsFactor
Compensation for wind conditions - inadequatePilot in commandCause
Directional control - not maintainedPilot in commandCause
Ground loop/swerve
Nose overLanding - roll
Remedial action - inadequatePilot in commandCause

Analysis

While attempting to land in strong, gusty crosswinds, the pilot was unable to keep the aircraft from departing the runway. After it departed the runway, the pilot attempted to complete the roll-out on the grassy area that ran along the side of the runway, but the aircraft was hit by a strong gust and nosed over.

Factual narrative

On August 5, 1996, approximately 1830 mountain daylight time, a Stinson 108-3, C-GYYF, registered to and being flown by a Canadian private pilot, was substantially damaged during a loss of control and subsequent nose over during the landing roll at the Culbertson Airport, Culbertson, Montana. The pilot was uninjured. Visual meteorological conditions existed and a VFR flight plan had been filed. The flight, which was personal in nature, was to have been operated under 14CFR91, and originated from Oshkosh, Wisconsin.

The pilot reported that on the leg from Wahpeton, North Dakota, to Poplar, Montana, she encountered strong headwinds and turbulence, and therefore decided to return to Culbertson to land. Upon arrival at Culbertson, she encountered strong, gusty wind conditions. While landing on runway 26, the aircraft was hit by the gusty crosswinds and departed the runway. While the pilot was attempting to complete the roll-out on the grassy area that ran along the side of the runway, the aircraft was hit by another gust and nosed over.

Strong, gusty winds prevailed throughout northeastern Montana at the time of the accident, and according to the pilot, the winds at Culbertson were gusting to 40 knots at the time of her landing.

Aircraft

Registration
CGYYF
Reported as
Stinson 108-3
Category
Airplane
Serial number
108-4516
Airframe hours
1,000
Engine
Franklin 6A4-165-B3, 165 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Smith, Selina, B.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 11, 1996 · 89 hours before
Departed
BWP · Wahpeton, ND
Destination
S85
Flight plan
VFR
Airport
S85 · Big Sky Field, runway 26, 3,800 × 60 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
372 total · 193 in this make and model · 304 as pilot in command · 40 in the last 90 days · 33 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 24 knots, gusting 40
Visibility
15 statute miles
Lowest ceiling
None
Temperature
81 °F