ANC07LA003

NTSB accident investigation · Cessna 207 · Tuntutuliak, AK · October 13, 2006

Accident · Minor injuriesLimited investigationFinal report
Date
October 13, 2006, 15:12 local (23:12 UTC)
Place
Tuntutuliak, AK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N7336UCessna 207
Weather
Instrument (IMC) · Day
Status
Completed · report May 29, 2007
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20061013023099A
Case key
64701

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 misjudgment of distance/altitude during the landing approach, which resulted in an undershoot and in-flight collision with a river embankment. Factors contributing to the accident were reduced visibility due to rain and mist.

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 - vfr pattern - final approach
Weather condition - rainFactor
Weather condition - drizzle/mistFactor
UndershootApproach - vfr pattern - final approach
Distance/altitude - misjudgedPilot in commandCause
In flight collision with terrain/waterApproach - vfr pattern - final approach
Terrain condition - dirt bank/rising embankment

Analysis

The commercial certificated pilot was attempting to land on a remote runway during a Title 14, CFR Part 135, cargo flight. The approach end of the runway is located at the edge of a river. During the pilot's fourth attempt to land, the airplane collided with the river embankment, and sustained structural damage. The director of operations for the operator reported that he interviewed several witnesses to the accident. They told him that the weather conditions in the area had been good VFR, but as the pilot was attempting to land, rain and mist moved over the area, reducing the visibility to about 1/4 mile. Within 30 minutes of the accident, the weather conditions were once again VFR. The pilot told an FAA inspector that the weather conditions consisted of a 500 foot ceiling and 2 miles of visibility. The pilot reported that he made 3 passes over the runway before attempting to land. On the last landing approach, while maintaining 80 knots airspeed, the pilot said the nose of the airplane dropped, he applied full power and tried to raise the nose, but the airplane collided with the river bank.

Factual narrative

On October 13, 2006, about 1512 Alaska daylight time, a wheel-equipped Cessna 207 airplane, N7336U, sustained substantial damage when it collided with the edge of a river embankment during the landing approach at the Tuntutuliak Airport, Tuntutuliak, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country nonscheduled cargo flight under Title 14, CFR Part 135, when the accident occurred. The airplane was operated by Flight Alaska Inc., d.b.a. Yute Air Alaska, Anchorage, Alaska. The commercial certificated pilot, the sole occupant, 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 Bethel Airport, Bethel, Alaska, about 1443.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on October 16, the director of operations for the operator reported that he interviewed several witnesses to the accident, and learned that the pilot was attempting to land on runway 20 at Tuntutuliak. The gravel surface runway is 1,772 long and 28 feet wide. The approach end of the runway is located at the edge of a river. The director of operations said the weather conditions in the area had been good VFR, but as the pilot was attempting to land, rain and mist moved over the area, reducing the visibility to about 1/4 mile. The airplane collided with the river embankment as the pilot was on his fourth landing attempt. The airplane received structural damage to the landing gear, fuselage and wings, and came to rest about 40 degrees to the left of the runway. The director of operations indicated that within 30 minutes of the accident, the weather conditions were once again VFR.

A Federal Aviation Administration (FAA) inspector from the Anchorage Flight Standards District Office (FSDO) interviewed the pilot by telephone. The inspector indicated that the pilot's assessment of the weather conditions was a 500 foot ceiling and 2 miles of visibility. The pilot reported that he made 3 passes over the runway before attempting to land. On the last landing approach, while maintaining 80 knots airspeed, the pilot said the nose of the airplane dropped, he applied full power and tried to raise the nose, but the airplane collided with the river bank.

Aircraft

Registration
N7336U
Reported as
Cessna 207
Category
Airplane
Serial number
20700405
Airframe hours
21,781
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Flight Alaska Inc., doing business as Yute Air Alaska
Registered owner
Maritime Sales and Leasing
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 2006 · 61 hours before
Departed
PABE · Bethel, AK
Destination
A61 · Tuntutuliak, AK
Flight plan
Company VFR
Airport
A61 · Tuntutuliak, runway 20, 1,772 × 28 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
60
Injuries
Minor
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land, Multi-engine sea, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
October 1, 2006
Seat
Left
Flight hours
5,700 total · 1,000 in this make and model · 5,000 as pilot in command · 10 in the last 90 days · 10 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
180° at 10 knots
Visibility
0.25 statute miles
Temperature
39 °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 N7336U · 1

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