ANC09LA025

NTSB accident investigation · Piper PA-31-350 · Buckland, AK · March 14, 2009

Accident · No injuriesLimited investigationFinal report
Date
March 14, 2009, 12:52 local (20:52 UTC)
Place
Buckland, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4112KPiper PA-31-350
Defining event
Landing-landing roll: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed · report July 28, 2009
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20090314046849A
Case key
73514

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 failure to abort the landing while landing on a snow/ice-covered runway.

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.

Action: delayed actionPersonnel issues › Action/decision · PilotPiper PA-31-350: 1 caseAll aircraft: 894 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 on a cargo flight when he landed on the snow-covered runway and, upon touching down, he noticed the braking action was nil. He said that about 500 feet from the departure end of the runway he realized that stopping was going to be a problem, but he elected not to abort the landing. The airplane slid off the end of the runway and struck a snowbank, causing structural damage to the left wing. He said that he had not received any reports about braking action for the airport that day, but that he had landed there on the previous day and that the condition of the runway then was acceptable. According to the pilot, there were no known mechanical problems with the airplane prior to the accident. After the accident he examined the runway surface and determined that it was light snow over ice. The Federal Aviation Administration Flight Information Supplement, Alaska, Buckland Airport, under airport remarks, says, in part: "Unattended. Runway condition not monitored, recommend visual inspection prior to landing."

Factual narrative

On March 14, 2009, about 1252 Alaska daylight time, a Piper PA-31-350 airplane, N4112K, sustained substantial damage during landing at the Buckland Airport, Buckland, Alaska. The airplane was operated by Frontier Flying Service, Anchorage, Alaska, as a visual flight rules (VFR), cross-country cargo flight under Title 14, CFR Part 135 when the accident occurred. The solo commercial pilot was not injured. Visual meteorological conditions prevailed, and a VFR flight plan was filed. The flight departed Kotzebue, Alaska about 1215. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on March 24, the pilot said he had not received any braking action reports about the destination airport, which was unattended. He said he had landed there on the previous day, and that the condition of the runway was acceptable. The pilot said during the accident landing, when he touched down the braking action was nil. He said he realized about 500 feet from the departure end of the runway that stopping was going to be a problem, but he elected not to abort the landing. He said the airplane slid off the end of the runway, and struck a snowbank. The left wing sustained structural damage when it struck the snowbank. The pilot stated there were no known mechanical problems with the airplane prior to the accident. After the accident he examined the runway surface, and determined that it was light snow over ice. He said he believed the sun had melted a layer of snow, which had refrozen into a layer of ice. The FAA Flight Information Supplement, Alaska, Buckland Airport, under airport remarks, says, in part: "Unattended. Runway condition not monitored, recommend visual inspection prior to landing."

Aircraft

Registration
N4112K
Reported as
Piper PA-31-350
Category
Airplane
Serial number
31-8353006
Airframe hours
25,406
Engines
Lycoming TIO-540 SER, 310 horsepower, reciprocatingLycoming TIO-540 SER, 310 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Frontier Flying Service, doing business as Frontier Flying Service
Registered owner
Icecap LLC Trustee
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · March 2, 2009
Departed
OTZ · Kotzebue, AK
Destination
PABL · Buckland, AK
Flight plan
VFR
Airport
PABL · Buckland, runway 11, 3,200 × 75 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
29
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
September 26, 2008
Seat
Left
Flight hours
4,000 total · 900 in this make and model · 2,400 as pilot in command · 127 in the last 90 days · 34 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 10 knots
Visibility
5 statute miles
Lowest ceiling
2,800 ft overcast
Temperature
-20 °F, dew point -24 °F
Altimeter
30.00 inHg
Observed at
PABL

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 N4112K · 2

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