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NTSB accident investigation · Piper PA 18-150 · Iliamna, AK · October 7, 2013

Accident · No injuriesData collectionFinal report
Date
October 7, 2013, 14:00 local (22:00 UTC)
Place
Iliamna, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N91144Piper PA 18-150
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report December 2, 2013
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA FSDO
FAA report
20131007025439A
Case key
88179

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 maintain aircraft control during the landing roll with a tailwind.

Findings · 3

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 98 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-18-150: 160 casesAll aircraft: 9,295 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Not specifiedPiper PA-18-150: 15 casesAll aircraft: 594 cases

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 pilot reported that during the uphill landing on the tundra with a slight tailwind, the tailwheel hit a bump and bounced off the ground. The tailwind caused the tail to rise and the airplane subsequently nosed over. The rudder and a wing strut were substantially damaged. The pilot reported no preimpact mechanical malfunction or failure with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that during the uphill landing on the tundra with a slight tailwind, the tailwheel hit a bump and bounced off the ground. The tailwind caused the tail to raise and the airplane subsequently nosed over. The rudder and a wing strut were substantially damaged. The pilot reported no preimpact mechanical malfunction or failure with the airplane that would have precluded normal operation.

Aircraft

Registration
N91144
Reported as
Piper PA 18-150 (A150)
Category
Airplane
Serial number
18-8109075
Built
1981
Airframe hours
5,578
Engine
Lycoming O320-B2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Tom's Alaskan Air
Registered owner
Atkins James A
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 14, 2013 · 56 hours before
Departed
PAIL · Iliamna, AK
Destination
Iliamna, AK
Flight plan
Company VFR

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
69
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
May 21, 2013
Seat
Front
Restraint
3-point
Flight hours
8,000 total · 7,500 in this make and model · 8,000 as pilot in command · 157 in the last 90 days · 69 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
3,500 ft overcast
Temperature
45 °F, dew point 45 °F
Altimeter
29.79 inHg
Observed at
PAIL, 28 nm away

Docket · 1

The files NTSB released with the investigation on November 20, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 655 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 N91144 · 1

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