ANC07LA014

NTSB accident investigation · Cessna 207 · Kipnuk, AK · January 7, 2007

Accident · No injuriesLimited investigationFinal report
Date
January 7, 2007, 19:30 local (23:30 UTC)
Place
Kipnuk, AK
Injuries
5 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6470HCessna 207
Weather
Visual (VMC) · Night/dark
Status
Completed · report May 29, 2007
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20070107000399A
Case key
65167

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 failure to maintain adequate clearance from terrain during the landing roll, which resulted in a collision with a snow berm with the left main landing gear, and subsequent damage to the right wing. Factors contributing to the accident were dark night lighting conditions, and a snow berm along the edge of the runway.

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.

On ground/water encounter with terrain/waterLanding - roll
Terrain condition - bermFactor
Clearance - not maintainedPilot in commandCause
Light condition - dark nightFactor

Analysis

The commercial certificated pilot was conducting a VFR, Title 14, CFR Part 135, scheduled commuter flight, and was landing on a remote runway during dark night conditions. During the landing roll, the left main landing gear tire struck a snow berm located inside the runway edge lights, along the left edge of the runway, pivoting the airplane to the left. The right wing then struck snow-covered terrain, and received structural damage to the outboard end of the wing.

Factual narrative

On January 7, 2007, about 1930 Alaska Standard time, a wheel-equipped Cessna 207 airplane, N6470H, sustained substantial damage during the landing roll at the Kipnuk Airport, Kipnuk, Alaska. The airplane was being operated as Flight 585, by Flight Alaska Inc., d.b.a. Yute Air Alaska, as a visual flight rules (VFR) cross-country scheduled commuter flight, under Title 14, CFR Part 135, when the accident occurred. The commercial certificated pilot and the four passengers were not injured. Dark night visual meteorological conditions prevailed, and VFR company flight following procedures were in effect. The flight originated at the Chefornak Airport, Chefornak, Alaska, about 1915.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on January 7, the director of operations for the operator reported that the pilot was landing on runway 33 at Kipnuk. The runway is 2,120 feet long, and 35 feet wide. The left main landing gear tire struck a snow berm along the left edge of the runway, and the airplane pivoted to the left. The right wing then struck snow-covered terrain.

In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) submitted by the operator, the pilot reported that the snow berm on the runway was inside of the runway edge lights.

The Federal Aviation Administration's (FAA) Airport/Facility Directory, Alaska Supplement listing for the Kipnuk Airport, includes the following notation: "Airport Remarks - Unattended. Caution: Runway condition not monitored, recommend visual inspection prior to using."

On January 19, the director of operations confirmed that the right wing of the airplane received structural damage to the outboard end of the wing.

Aircraft

Registration
N6470H
Reported as
Cessna 207
Category
Airplane
Serial number
20700534
Airframe hours
25,267
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
Departed
PACK · Chefornak, AK
Destination
PAKI · Kipnuk, AK
Flight plan
Company VFR
Airport
PAKI · Kipnuk, runway 33, 2,120 × 35 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
64
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 1, 2006
Seat
Left
Flight hours
3,000 total · 2,000 in this make and model · 3,000 as pilot in command · 200 in the last 90 days · 70 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Visibility
5 statute miles
Lowest ceiling
4,000 ft
Temperature
-20 °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 N6470H · 3

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