ANC92LA087

NTSB accident investigation · Piper PA-12 · Klutina Lake, AK · June 7, 1992

Accident · No injuriesLimited investigationFinal report
Date
June 7, 1992, 11:00 local (19:00 UTC)
Place
Klutina Lake, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N4088MPiper PA-12
Weather
Visual (VMC) · Day
Status
Completed · report May 26, 1993
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19920607040579A
Case key
5737

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 pilo'ts poor inflight planning. Factors include downdrafts, and mountainous/ hilly 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.

Altitude deviation,uncontrolledManeuvering
In-flight planning/decision - poorPilot in commandCause
Weather condition - downdraftFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - mountainous/hillyFactor

Analysis

The pilot of the Piper pa 12 was flying at about 100 feet AGL when he encountered a downdraft while heading directly toward a ridge. He applied full power, but the aircraft was unable to outclimb the rising terrain.

Aircraft

Registration
N4088M
Reported as
Piper PA-12
Category
Airplane
Serial number
12-3003S
Engine
Lycoming O-320-A2A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mayeur, Clint
Registered owner
Lloyd, Kent S.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · March 14, 1992 · 70 hours before
Departed
GKN · Gulkana, AK

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
30
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
3,050 total · 3,000 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 10 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
63 °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 N4088M · 1

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