ANC98LA040

NTSB accident investigation · Cessna 207A · Scammon Bay, AK · April 22, 1998

Accident · Minor injuriesLimited investigationFinal report
Date
April 22, 1998, 11:30 local (19:30 UTC)
Place
Scammon Bay, AK
Injuries
2 minor, 5 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N7438UCessna 207A
Weather
Instrument (IMC) · Day
Status
Completed · report February 15, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19980422007419A
Case key
3132

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 continued VFR flight into instrument meteorological conditions. Factors in the accident were low ceilings, and whiteout 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 condition - low ceilingFactor
Weather condition - whiteoutFactor
Vfr flight into imc - continuedPilot in commandCause
In flight collision with terrain/waterCruise
Terrain condition - mountainous/hilly
Terrain condition - snow covered

Analysis

A VFR cross-country air taxi flight with six passengers departed for a remote village. The pilot had previously flown along the accident route that transited a mountainous area. Low clouds were present over the mountains, and the pilot utilized a mountain pass to transit the area about 200 feet above the ground. He decided that route was not suitable for the accident flight with any passengers. During the accident flight, the pilot proceed east of the previously utilized mountain pass. The flight however, still necessitated transiting an area of low hills. As the flight was approaching the destination, snow covered terrain was rising toward low clouds over the mountains. The pilot observed what he thought was the approach end of the destination airport, and began a descent. The apparent runway was actually a creek bottom. The pilot began a turn, and observed rising terrain. He stopped the turn and applied full power. The airplane collided with rising terrain in a whiteout condition, about 900 feet msl. A passenger in the airplane reported that about 10 minutes after departure, the airplane entered an area of fog at an altitude of 3,000 feet msl. His view of the ground disappeared, and the area around the airplane was completely white. About 5 minutes after entering the fog, the airplane collided with snow covered terrain.

Factual narrative

On April 22, 1998, about 1130 Alaska daylight time, a wheel equipped Cessna 207A airplane, N7438U, sustained substantial damage during a collision with snow covered terrain, about 3 1/2 miles southeast of Scammon Bay, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country on-demand passenger flight under Title 14 CFR Part 135 when the accident occurred. The airplane was operated by Hageland Aviation Services Inc., Anchorage, Alaska. The certificated airline transport pilot, and four of the six passengers aboard, were not injured. Two passengers received minor injuries. Instrument meteorological conditions prevailed in the area of the accident. VFR company flight following procedures were in effect. The flight originated at the Hooper Bay Airport, Hooper Bay, Alaska, at 1107.

In the pilot statement attached to the pilot/operator report (NTSB form 6120.1/2) submitted by the operator, the pilot reported he was in Scammon Bay about 1030, and flew to Hooper Bay to pick up the accident flight passengers. The passengers were a high school basketball team, and their coach, who were traveling to Scammon Bay.

During the flight to Hooper Bay, the pilot reported low clouds were present in an area of mountains along the route of flight. He utilized a mountain pass to transit the area below a 200 foot ceiling, and decided his route was not suitable for the return flight to Scammon Bay with passengers aboard.

During the accident flight to Scammon Bay, the pilot decided to proceed east of the previously utilized mountain pass. The flight however, still necessitated transiting an area of low hills. As the flight was approaching Scammon Bay, snow covered terrain was rising toward low clouds over the mountains. The pilot observed what he thought was the approach end of the runway at Scammon Bay, and began a descent from 2,500 feet msl. The apparent runway was actually a creek bottom. The pilot began a turn, and observed rising terrain. He stopped the turn and applied full power. The airplane collided with rising terrain in a whiteout condition, about 900 feet msl. The airplane then nosed over. Search and rescue personnel from both villages located the accident site about 1 1/2 hours later.

A passenger in the airplane reported that about 10 minutes after departing Hooper Bay, the airplane entered an area of fog at an altitude of 3,000 feet msl. His view of the ground disappeared, and the area around the airplane was completely white. About 5 minutes after entering the fog, the airplane collided with snow covered terrain.

Aircraft

Registration
N7438U
Reported as
Cessna 207A
Category
Airplane
Serial number
20700464
Airframe hours
7,317
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Hageland Aviation Services Inc
Registered owner
Gussic Ventures
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · April 19, 1998 · 2 hours before
Departed
HPB · Hooper Bay, AK
Destination
SCM · Scammon Bay, AK
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
57
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
18,000 total · 800 in this make and model · 7,000 as pilot in command · 156 in the last 90 days · 49 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
130° at 14 knots
Visibility
4 statute miles
Lowest ceiling
None
Temperature
30 °F, dew point 28 °F
Altimeter
30.00 inHg
Observed at
HPB, 25 nm away

FAA reports on this event · 1

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