ANC10LA013

NTSB accident investigation · Cessna 172M · Bethel, AK · January 19, 2010

Accident · No injuriesLimited investigationFinal report
Date
January 19, 2010, 09:30 local (13:30 UTC)
Place
Bethel, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N20109Cessna 172M
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report May 28, 2010
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA FSDO-03
FAA report
20100119026049A
Case key
75288

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 directional control of the airplane during takeoff.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 172M: 123 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172M: 59 casesAll aircraft: 3,958 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The commercial pilot was taking off on a passenger flight when the accident occurred. The pilot reported that he lost directional control of the airplane during the takeoff roll, and that the airplane went off the left side of the runway and collided with a snowbank. The airplane sustained structural damage to the fuselage aft of the nosewheel. The pilot reported that after exiting the airplane he discovered that the left main landing gear wheel was locked up and that he was unable to rotate the wheel. The director of operations reported that the left main landing gear wheel and assembly was examined by their mechanics and that no mechanical malfunctions were discovered.

Factual narrative

On January 19, 2010, about 0930 Alaska standard time, a Cessna 172M airplane, N20109, sustained substantial damage when it collided with a snowbank following a loss of control during takeoff at the Bethel Airport, Bethel, Alaska. The airplane was being operated by Yute Air Taxi Inc., Bethel, as Flight 570, a visual flight rules (VFR) passenger flight under Title 14, CFR Part 135, when the accident occurred. The commercial pilot and the two passengers were not injured. Visual meteorological conditions prevailed, and company flight following procedures were in effect. The airplane was bound for Napakiak, Alaska. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on January 19, The Director of Operations for the operator said the pilot told him he lost directional control of the airplane during the takeoff roll, and that the airplane went off the left side of the runway, and collided with a snowbank. The director said the airplane sustained structural damage to the fuselage aft of the nose wheel. He said there were no known mechanical problems with the airplane prior to the accident. In a written statement to the NTSB dated January 20, 2010, the pilot reported that after exiting the airplane he discovered that the left main landing gear wheel was locked up, and he was unable to rotate the wheel. In an email to the NTSB dated February 19, 2010, the director of operations reported that the left main landing gear wheel and assembly had been examined by their mechanics, and no mechanical malfunctions were discovered.

Aircraft

Registration
N20109
Reported as
Cessna 172M
Category
Airplane
Serial number
17261017
Airframe hours
17,655
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Yute Air Taxi, doing business as Yute Air Taxi
Registered owner
Bethel Leasing LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · November 29, 2009
Departed
PABE · Bethel, AK
Destination
PANA · Napakiak, AK
Flight plan
Company VFR
Airport
PABE · Bethel, runway 01, 6,400 × 150 ft, asphalt

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
25
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
May 1, 2009
Seat
Left
Flight hours
1,180 total · 650 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 15 knots
Visibility
4 statute miles
Lowest ceiling
4,100 ft overcast
Temperature
-0 °F, dew point -8 °F
Altimeter
29.19 inHg
Observed at
BET

Docket · 2

The files NTSB released with the investigation on April 2, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 680 KB in all.

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 N20109 · 1

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