ANC96LA143

NTSB accident investigation · Piper PA-18 · Gakona, AK · September 2, 1996

Accident · No injuriesLimited investigationFinal report
Date
September 2, 1996, 13:00 local (21:00 UTC)
Place
Gakona, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7669DPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report August 29, 1997
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19960902025939A
Case key
2895

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 gusty crosswind conditions, which resulted in a loss of directional control and subsequent collision with trees/brush. Factors relating to the accident were: the crosswind and wind gusts.

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 - gustsFactor
Compensation for wind conditions - inadequatePilot in commandCause
Directional control - not maintainedPilot in commandCause
On ground/water collision with objectLanding - roll
Object - tree(s)

Analysis

The pilot reported he was landing his 'Tundra' tire equipped airplane on a turf airstrip in gusty crosswind conditions. During the landing roll, a gust of wind veered the airplane to the right. The pilot was unable to maintain directional control, and the airplane went off the airstrip and collided with trees and brush.

Factual narrative

On September 2, 1996, about 1300 Alaska daylight time, a "Tundra" tire equipped Piper PA-18 airplane, N7669D, sustained substantial damage while landing at the Chistochina airstrip, which is located approximately 30 miles northeast of Gakona, Alaska. The private certificated pilot and the sole passenger aboard were not injured. The 14 CFR Part 91 flight operated in visual meteorological conditions without a flight plan. The flight last departed a rural "bush" airstrip near Mankomen Lake, about 1240, and the destination was Chistochina.

During a telephone conversation with the NTSB investigator-in-charge on September 4, 1996, the pilot stated he was attempting to land on runway 01 in gusty winds. He said the airplane initially bounced on landing, and he added power and touched down again. While rolling out after the second touchdown, he said a crosswind gust caused the airplane to veer to the right. He was unable to control the airplane, and it went off the runway and collided with the bordering trees and brush.

Aircraft

Registration
N7669D
Reported as
Piper PA-18
Category
Airplane
Serial number
18-5939
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Larry R. Scribner
Airworthiness certificate
Standard, Normal; Standard, Utility
Departed
Mankomen Lake, AK
Airport
CZO · Chistochina, runway 1, 2,060 × 90 ft, grass/turf

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
56
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
2,057 total · 1,564 in this make and model · 2,057 as pilot in command · 25 in the last 90 days · 20 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 15 knots, gusting 20
Visibility
60 statute miles
Lowest ceiling
None
Temperature
61 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N7669D · 2

Matched to the same aircraft by N-number and date.