ANC05LA068

NTSB accident investigation · Piper PA-31-350 · Utopia, AK · December 15, 2004

Accident · No injuriesLimited investigationFinal report
Date
December 15, 2004, 11:15 local (15:15 UTC)
Place
Utopia, AK
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N792FCPiper PA-31-350
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2005
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20041215032409A
Case key
61503

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 misjudged distance/speed while on final approach to land, which resulted in an overrun during the landing roll. Factors associated with the accident are the pilot's inadequate weather evaluation, and a gusty tailwind.

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.

OverrunLanding - roll
Distance/speed - misjudgedPilot in commandCause
Weather evaluation - inadequatePilot in commandFactor
Weather condition - tailwindFactor
Weather condition - gustsFactor
Terrain condition - snow covered
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - snowbank

Analysis

The airline transport pilot was landing a twin engine airplane to the west on a 4,100 foot long, snow-covered gravel runway. The airport is surrounded by mountains, except to the east, requiring that arriving aircraft use the westerly runway, and departing aircraft use the easterly runway. Prior to landing, the pilot reported winds to be out of the east at 17 knots, with peak gusts to 29 knots. In an attempt to avoid turbulence while on approach, he selected a touchdown point that was about midpoint on the runway. Just before touchdown, a strong gust of wind lifted the airplane, and carried it further down the runway than the anticipated touchdown point. Without room to complete a successful go-around, the pilot landed the airplane on the remaining runway, and applied heavy braking action. The airplane overran the end of the runway, and struck a snow bank, sustaining structural damage to the fuselage. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

Factual narrative

On December 15, 2004, about 1115 Alaska standard time, a twin engine Piper PA-31-350 airplane, N792FC, sustained substantial damage when it struck a snow bank during a runway overrun while landing at the Indian Mountain Airport, Utopia, Alaska. The airplane was being operated by Warbelow's Air Ventures, of Fairbanks, Alaska, as a Title 14, CFR Part 135, on-demand charter flight when the accident occurred. The airline transport pilot and the three passengers were not injured. Visual meteorological conditions prevailed at the time of the accident, and a VFR flight plan was filed. The flight originated at the Fairbanks International Airport, Fairbanks, about 1006.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on December 16, the pilot reported that the Indian Mountain Airport is surrounded by mountainous terrain, except to the east. He added that due to rising terrain around the airport, arriving aircraft use runway 24, and departing aircraft use runway 6. The pilot reported that prior to landing he contacted a weather observer at the Indian Mountain Airport for an airport weather advisory report, and winds were reported to be 070 degrees at 17 knots, with peak gusts to 29 knots. He said that while landing on runway 24, and in an attempt to avoid turbulence while on approach, he selected a touchdown point that was located about midway on the 4,100-foot long, snow-covered gravel runway. The pilot reported that just before touchdown, a strong gust of wind lifted the airplane about 50-feet into the air, and carried the airplane farther down the runway from his anticipated touchdown point. He said that a successful go-around was not probable, and he landed the airplane on the remaining runway and applied heavy braking. The airplane continued to the end of the runway, struck a snow bank, and entered the overrun area. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

The airplane was subsequently ferried to the operator's maintenance facility in Fairbanks, where the operator's maintenance personnel discovered structural damage to the fuselage.

Aircraft

Registration
N792FC
Reported as
Piper PA-31-350
Category
Airplane
Serial number
31-7552108
Airframe hours
25,732.5
Engine
Continental IO-540-J2BD, 350 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Warbelows Air Ventures Inc
Registered owner
Snobow, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · December 1, 2004 · 22.8 hours before
Departed
FAI · Fairbanks, AK
Destination
UTO · Utopia, AK
Flight plan
VFR
Airport
PAIM · Indian Mountain Airport, runway 24, 4,100 × 120 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
37
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Seat
Left
Flight hours
6,887 total · 3,428 in this make and model · 6,783 as pilot in command · 245 in the last 90 days · 53 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 17 knots, gusting 29
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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