ANC97LA022

NTSB accident investigation · Cessna 207A · Tununak, AK · January 17, 1997

Accident · Serious injuriesLimited investigationFinal report
Date
January 17, 1997, 14:30 local (18:30 UTC)
Place
Tununak, AK
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9603MCessna 207A
Weather
Instrument (IMC) · Day
Status
Completed · report May 21, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19970117000739A
Case key
2962

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

the pilot's decision to continue VFR flight into instrument meteorological conditions (IMC), and his failure to maintain clearance from rising terrain. Factors associated with the accident were: low ceiling, fog, rising terrain, and the pilot's inadequate evaluation of the weather 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
Weather condition - low ceilingFactor
Weather condition - fogFactor
Weather condition - obscurationFactor
Vfr flight into imc - continuedPilot in commandCause
In flight collision with terrain/waterManeuvering - turn to reverse direction
Terrain condition - risingFactor
Clearance - not maintainedPilot in commandCause

Analysis

The air taxi pilot was flying cargo to a remote village located near the sea. He reported he was following the coastline, with the ocean on his right, and the shore and rising terrain on his left. He indicated that as he approached his destination, the weather conditions began to deteriorate with lowering clouds, drizzle, and fog. He was trying to decide which direction to turn to avoid clouds, when he entered the clouds and struck rising terrain. The pilot was subsequently rescued by local villagers on snow machines.

Factual narrative

On January 17, 1997, about 1430 Alaska standard time, a wheel equipped Cessna 207A airplane, N9603M, owned and operated by Alaska Central Express, sustained substantial damage when it collided with rising terrain in instrument meteorological weather conditions, about 6 miles northeast of Tununak, Alaska. The solo commercial certificated pilot received serious injury. The all cargo, on demand 14 CFR Part 135 air taxi flight departed Bethel, Alaska, at 1329. The intended destination was Tununak, with an eventual return to Bethel. A company visual flight rules flight plan was in effect.

The pilot reported he was flying southeast, generally along the shoreline of the Bering Sea, in good visual flight rules meteorological conditions. As he approached closer to Tununak, the weather conditions deteriorated. He was attempting to decide which direction to turn to circumnavigate the lowering clouds and mist, when he flew into clouds and fog. He saw terrain about 50 feet below and to the left (east). He pulled up and started a turn to the north, but struck rising terrain about 1,000 feet msl.

Villagers from Tununak started a search on snow machines for the pilot soon after the accident. He was located by the villagers, and taken to Tununak for initial treatment.

Aircraft

Registration
N9603M
Reported as
Cessna 207A
Category
Airplane
Serial number
710
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Alaska Central Express
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · January 11, 1997 · 6 hours before
Departed
BET · Bethel, AK
Destination
TNK
Flight plan
Company 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
46
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
2,825 total · 1,405 in this make and model · 2,516 as pilot in command · 25 in the last 90 days · 25 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
360° at 18 knots
Temperature
36 °F

FAA reports on this event · 1

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