ANC89LA086

NTSB accident investigation · Piper PA-12 · Anaktuvuk Pass, AK · June 4, 1989

Accident · Minor injuriesLimited investigationFinal report
Date
June 4, 1989, 15:30 local (23:30 UTC)
Place
Anaktuvuk Pass, AK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N3148MPiper PA-12
Weather
Visual (VMC) · Day
Status
Completed · report May 22, 1990
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19890604014099A
Case key
5195

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 failed to adequately compensate for downdrafts encountered after departing a gravel bar that was surrounded by mountainous terrain.

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 - in flightTakeoff - initial climb
Weather condition - downdraftFactor
Compensation for wind conditions - inadequatePilot in commandCause
Wind information - not identifiedPilot in commandFactor
In flight collision with terrain/waterManeuvering - turn to reverse direction
Terrain condition - mountainous/hillyFactor

Aircraft

Registration
N3148M
Reported as
Piper PA-12
Category
Airplane
Serial number
12-1835
Airframe hours
3,637
Engine
Lycoming O-320-B2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Keith A. Echelmeyer
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 1, 1989 · 81 hours before
Destination
BET · Bettles, AK
Flight plan
VFR

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
34
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
1,028 total · 267 in this make and model · 935 as pilot in command · 81 in the last 90 days · 32 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 5 knots
Visibility
20 statute miles
Lowest ceiling
6,000 ft broken
Temperature
55 °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 N3148M · 2

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