ANC90LA071

NTSB accident investigation · Piper PA-18 · Big Mountain, AK · May 18, 1990

Accident · No injuriesLimited investigationFinal report
Date
May 17, 1990, 18:30 local (May 18, 1990, 02:30 UTC)
Place
Big Mountain, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N407WBPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report September 21, 1992
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19900517016999A
Case key
5366

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

Pilot-in-command failed to compensate for gusty wind conditions and control of the aircraft during the take off roll.

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/waterTakeoff - roll/run
Weather condition - high windFactor
Aircraft control - not maintainedPilot in commandCause
Weather condition - gustsFactor
Directional control - not maintainedPilot in commandCause
Nose overTakeoff - roll/run

Analysis

During the takeoff roll, the pilot lost directional control of the airplane. The airplane then nosed over on to its back. The pilot stated that a gust of wind caused the loss of control. Wind conditions were 120 degrees at 15 knots with gusts to 20 knots.

Aircraft

Registration
N407WB
Reported as
Piper PA-18
Category
Airplane
Serial number
188085
Engine
Lycoming O-320-A2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Chris F. Goll
Airworthiness certificate
Standard, Normal
Airport
runway 9, 3,500 × 75 ft, gravel

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
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--no waivers/lim.
Flight hours
4,000 total · 2,500 in this make and model · 4,000 as pilot in command · 30 in the last 90 days · 30 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 15 knots, gusting 20
Visibility
50 statute miles
Lowest ceiling
1,500 ft broken
Temperature
55 °F, dew point 30 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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