GAA19CA500

NTSB accident investigation · Piper PA18 · Tok, AK · July 27, 2019

Accident · No injuriesData collectionFinal report
Date
July 27, 2019, 14:40 local (22:40 UTC)
Place
Tok, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N82253Piper PA18
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 13, 2020
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20190727012639A
Case key
100099

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 during landing and his excessive rudder input, which resulted in a runway excursion and landing gear collapse.

Findings · 5

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
Flight control system: rudder control systemAircraft › Aircraft systems · Incorrect use/operationPiper PA-18-150: 2 casesAll aircraft: 93 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-18-150: 160 casesAll aircraft: 9,295 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotPiper PA-18-150: 20 casesAll aircraft: 1,391 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-18-150: 13 casesAll aircraft: 1,008 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 landing with a gusting crosswind, the airplane veered right. He applied left rudder, and the airplane veered left and then exited the runway onto gravel. The right main landing gear collapsed, and the right wing impacted the ground. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The pilot of the tundra tire and tailwheel-equipped airplane reported that, during landing in a gusting crosswind, the airplane veered to the right. He applied left rudder and the airplane veered to the left and exited the runway. During the runway excursion in the gravel next to the runway, the right main landing gear collapsed, and the right wing impacted the ground. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot reported that the wind was from 180° at 5 knots, gusting to 7 knots. The pilot landed the airplane on runway 07.

Aircraft

Registration
N82253
Reported as
Piper PA18 (150)
Category
Airplane
Serial number
18-7909082
Built
1979
Airframe hours
642
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Dirt Strip Dirtbags LLC
Registered owner
Dirt Strip Dirtbags LLC
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · June 10, 2019
Departed
FAI · Fairbanks, AK
Destination
6K8 · Tok, AK
Flight plan
VFR
Airport
6K8 · Tok Junction, runway 07, 2,509 × 50 ft, asphalt
Equipment
Electronic flight bag or handheld device, Onboard weather, Satellite tracking device

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
57
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 30, 2019
Seat
Front
Restraint
4-point
Flight hours
1,860 total · 13 in this make and model · 1,690 as pilot in command · 38 in the last 90 days · 26 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots, gusting 7
Visibility
12 statute miles
Lowest ceiling
None

Docket · 2

The files NTSB released with the investigation on October 24, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.4 MB 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.