ANC95LA082

NTSB accident investigation · Cessna 172 · Anaktuvuk, AK · June 25, 1995

Accident · Minor injuriesLimited investigationFinal report
Date
June 24, 1995, 16:30 local (Jun 25, 1995, 00:30 UTC)
Place
Anaktuvuk, AK
Injuries
2 minor, 2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4278QCessna 172
Weather
Instrument (IMC) · Day
Status
Completed · report January 29, 1996
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19950624019799A
Case key
2670

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 inadvertent flight into instrument meteorological conditions. Factors relating to the accident were: the pilot's inadequate weather evaluation, and the weather and terrain conditions.

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.

In flight encounter with weatherCruise
Weather evaluation - inadequatePilot in commandFactor
Terrain condition - blind/box canyonFactor
Weather condition - cloudsFactor
Weather condition - low ceilingFactor
Vfr flight into imc - inadvertentPilot in commandCause
In flight collision with terrain/waterManeuvering - turn to reverse direction
Terrain condition - risingFactor

Analysis

The pilot reported he entered a mountain pass after waiting for the weather to improve. He said that part way through the pass, the cloud conditions lowered very rapidly, and he lost visual reference with a river or its tributary that he was following. He attempted to turn around and leave the pass, but saw rising terrain directly ahead. He leveled the wings and applied full power in an attempt to out-climb the terrain, but was unable. The airplane crash landed on the uphill terrain. The pilot and three passengers were rescued the following day.

Factual narrative

On June 24, 1995, about 1630 Alaska daylight time, a Cessna 172 airplane, N4278Q, sustained substantial damage when it collided with terrain in Anaktuvuk Pass, located approximately 26 miles north of Anaktuvuk, Alaska. The private pilot and one of the three passengers aboard were not injured; the remaining two passengers received minor injuries. The personal flight was en route to Fairbanks, Alaska, with an intermediate stop at Umiat, Alaska. The pilot had filed a VFR flight plan upon departing Barrow. Instrument meteorological conditions prevailed at the crash site.

The pilot reported he entered Anaktuvuk Pass and noticed deteriorating weather conditions. He turned around and returned to Umiat to wait for better weather conditions.

The pilot monitored the weather from Umiat via the Fairbanks Flight Service Station, and received a report that the weather as observed by an Automated Weather Observation Station in Anaktuvuk Pass was 3,600 broken, with ten miles visibility. He also received a pilot report indicating that the pass was flyable. He elected to depart Umiat about 1545, and entered Anaktuvuk Pass. About 1630, the weather conditions in the pass suddenly deteriorated, and the pilot said he was unable to see the river he was following or its tributaries. He tried a 180 degree turn to return to Umiat. He said he was unable to complete the turn due to a steep hill directly in front of him. He said he levelled the airplane's wings, and climbed at full power. The airplane was unable to climb faster than the rising terrain, and soon crashed heading uphill.

The emergency locator transmitter did not activate during the crash sequence. It was manually activated, and Search and Rescue flew over the site within 90 minutes of the accident. Due to the poor weather, rescue personnel could reach the crash site until 0400 the next day (6/25).

Aircraft

Registration
N4278Q
Reported as
Cessna 172
Category
Airplane
Serial number
17260178
Airframe hours
3,200
Engine
Lycoming O-360, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Don Amato
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · June 8, 1995 · 35 hours before
Departed
UMT · Umiat, AK
Destination
FAI · Fairbanks, 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
68
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
3,600 total · 2,300 in this make and model · 3,600 as pilot in command · 6 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Visibility
1 statute miles
Temperature
19 °F

FAA reports on this event · 1

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