ANC05CA017

NTSB accident investigation · Cessna U206G · Nunapitchuk, AK · December 16, 2004

Accident · No injuriesData collectionFinal report
Date
December 16, 2004, 11:15 local (15:15 UTC)
Place
Nunapitchuk, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N496KCessna U206G
Weather
Visual (VMC) · Dawn
Status
Completed · report March 30, 2005
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
20041216034149A
Case key
60733

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 inadequate compensation for gusty wind conditions, which resulted in a loss of directional control, and collision with a ditch. Factors contributing to the accident were an icy taxiway and wind gusts.

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.

Loss of control - on ground/waterTaxi - to takeoff
Weather condition - gustsFactor
Compensation for wind conditions - inadequatePilot in commandCause
Terrain condition - runwayFactor
Terrain condition - icyFactor
On ground/water encounter with terrain/waterTaxi - to takeoff
Terrain condition - ditch
Nose overTaxi - to takeoff

Analysis

The airline transport pilot was taxiing the airplane for takeoff on an icy taxiway in gusty wind conditions. He said a gust of wind pushed the airplane off the side of the icy taxiway, where it encountered a ditch and nosed over.

Factual narrative

On December 16, 2004, about 1115 Alaska standard time, a wheel-equipped Cessna U206G airplane, N496K, sustained substantial damage when it departed the taxiway while taxing for takeoff, encountered a ditch, and nosed over at the Nunapitchuk Airport, Nunapitchuk, Alaska. The airplane was being operated by Katmai Air Leasing LLC, of Anchorage, Alaska, as a visual flight rules (VFR) positioning flight under Title 14, CFR Part 91, when the accident occurred. The solo airline transport pilot was not injured. Visual meteorological conditions prevailed, and company VFR flight following procedures were in effect.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on December 16, the pilot said he was taxing for takeoff, when a gust of wind forced the airplane off the icy taxiway. He said the airplane encountered a ditch and nosed over.

During a telephone conversation with the IIC on December 16, the FAA aviation safety inspector who examined the airplane at the accident site, said there appeared to be structural damage to the right wing.

Aircraft

Registration
N496K
Reported as
Cessna U206G
Category
Airplane
Serial number
U20603953
Engine
Continental IO-520F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Katmai Air Leasing LLC, doing business as Katmai Air Service
Registered owner
Katmai Air Leasing LLC
Airworthiness certificate
Standard, Normal; Standard, Utility
Departed
16A · Nunapitchuk, AK
Destination
BET · Bethel, AK
Flight plan
Company VFR
Airport
16A · Nunapitchuk, runway 36

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
27
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2
Flight hours
3,500 total · 1,900 in this make and model · 187 in the last 90 days · 63 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dawn
Wind
320° at 20 knots, gusting 25
Visibility
20 statute miles
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.