ANC21LA041

NTSB accident investigation · Piper PA-18-105 Special · Palmer, AK · May 13, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
May 13, 2021, 10:00 local (18:00 UTC)
Place
Palmer, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N154TPiper PA-18-105 Special
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20210513008889A
Case key
103099

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 selection of unsuitable terrain for takeoff, which resulted in a loss of control and ground loop.

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-18-105 SPECIAL: 4 casesAll aircraft: 3,958 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationPiper PA-18-105 SPECIAL: 1 caseAll aircraft: 933 cases
Runway/land/takeoff/taxi surface: soft surfaceEnvironmental issues › Physical environment · Decision related to conditionPiper PA-18-105 SPECIAL: 1 caseAll aircraft: 264 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 pilot of the tailwheel-equipped airplane reported that, during the takeoff from an unimproved airstrip, the left tire sunk into soft ground and the airplane veered left. Subsequently, the left tire encountered willow bushes and the airplane ground looped to the left sustaining substantial damage to the right wing, right aileron, and empennage. The pilot reported no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N154T
Reported as
Piper PA-18-105 Special
Category
Airplane
Serial number
18-2268
Built
1952
Airframe hours
5,779
Engine
Lycoming O-320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John H. Holman
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 19, 2020
Equipment
ADS-B, Handheld GPS

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
51
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
May 4, 2021
Seat
Front
Restraint
3-point
Flight hours
6,700 total · 240 in this make and model · 6,500 as pilot in command · 6 in the last 90 days · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Temperature
52 °F, dew point 30 °F
Altimeter
30.11 inHg
Observed at
PAAQ, 29 nm away
METAR
PAAQ 131753Z 00000KT 10SM CLR 11/M01 A3011 RMK AO2 SLP200 T01111011 10117 20039 58009

Docket · 2

The files NTSB released with the investigation on November 12, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.6 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.

Other investigations on N154T · 1

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