ANC97LA027

NTSB accident investigation · Cessna 207 · Chevak, AK · February 22, 1997

Accident · No injuriesLimited investigationFinal report
Date
February 22, 1997, 18:40 local (22:40 UTC)
Place
Chevak, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N7389UCessna 207
Weather
Instrument (IMC) · Day
Status
Completed · report May 21, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19970222003669A
Case key
2965

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 NTSB’s determination of the probable cause, and any contributing factors.

the pilot's continued VFR flight into instrument meteorological conditions, his misjudgment of distance and altitude during the approach to land, and his failure to attain a proper touchdown point during the landing. A factor relating to the accident was: the flat/white-out lighting condition.

Analysis

The pilot was on a cargo flight and was making an intermediate stop at a remote airport. Another company airplane landed about 3 minutes before the accident flight. The weather conditions included flat lighting conditions and overcast skies. Visibility near the runway varied from 1/2 to 3/4 mile in blowing snow, with a right quartering crosswind of 20 to 30 knots. The pilot indicated the airplane developed a high sink rate near the approach end of the runway, and he added engine power to stabilize the landing approach. The pilot reported that about 150 to 200 yards from the approach end of the runway, he encountering white-out conditions. The nose wheel of the airplane struck a snow berm 12 inches wide and 6 inches high, at the edge of the runway safety area, about 100 feet short of the runway threshold. Witnesses observed the airplane approaching the runway at a shallow angle with nearly 200 yards remaining before the beginning of the runway environment. The runway was marked with illuminated lighting and orange cones.

Factual narrative

On February 22, 1997, about 1840 Alaska standard time, a wheel equipped Cessna 207, N7389U, collided with terrain while landing at Chevak, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country cargo flight under Title 14 CFR Part 135 when the accident occurred. The airplane, operated by Camai Air, Bethel, Alaska, sustained substantial damage. The certificated commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed in the area. Instrument meteorological conditions prevailed near the runway. VFR company flight following procedures were in effect. The flight originated at the Bethel airport, about 1730.

In the pilot/operator report submitted by the operator, the pilot indicated he was landing on runway 32, about 3 minutes behind another company airplane. The weather conditions included flat lighting conditions, visibility from 1 to 5 miles, and a right quartering crosswind of 20 to 25 knots. The pilot indicated the airplane developed a high sink rate near the approach end of the runway and he added engine power to stabilize the landing approach. About 150 to 200 yards from the approach end of the runway, the pilot reported encountering white-out conditions. The airplane then struck a snow berm with the nose wheel. The pilot reported the snow berm was 12 inches wide, 6 inches high, and extended the full width of the runway. The nose wheel was sheared off, damaging the underside of the fuselage. The airplane touched down on the runway and received damage to the propeller, engine cowling, and nose gear strut.

An Alaska State Trooper observed the accident airplane during the landing approach. He estimated the weather conditions as 700 feet overcast, visibility, 1/2 to 3/4 mile in blowing snow, wind from the north at 20 knots, with gusts to 30 knots. The trooper indicated the airplane appeared to be approaching the runway at a shallow angle with nearly 200 yards remaining before the beginning of the runway environment. The airplane collided with a snow berm about 2 feet short of the runway safety area. The runway safety area extends approximately 100 feet from the beginning of the runway threshold. The airplane came to rest on the runway, about 600 feet from the threshold. The trooper also indicated the runway was marked with illuminated lighting and orange cones.

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 weatherApproach
Light condition - otherFactor
Weather condition - low ceilingFactor
Weather condition - high windFactor
Weather condition - snowFactor
Vfr flight into imc - continuedPilot in commandCause
UndershootApproach - vfr pattern - final approach
Distance/altitude - misjudgedPilot in commandCause
Proper touchdown point - not attainedPilot in commandCause
On ground/water encounter with terrain/waterLanding
Terrain condition - berm

Aircraft

Registration
N7389U
Reported as
Cessna 207
Category
Airplane
Serial number
20700423
Airframe hours
15,460
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Village Aviation
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · February 13, 1997 · 16 hours before
Departed
BET · Bethel, AL
Destination
VAK
Flight plan
Company VFR
Airport
VAK · Chevak, runway 32, 2,610 × 40 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
49
Certificate
Commercial
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
6,300 total · 3,000 in this make and model · 6,200 as pilot in command · 311 in the last 90 days · 119 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
325° at 20 knots, gusting 30
Visibility
0.5 statute miles
Lowest ceiling
700 ft overcast
Temperature
25 °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 N7389U · 1

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