WPR22LA288

NTSB accident investigation · Piper PA-18-150 · McCarthy, AK · July 28, 2022

Accident · No injuriesClass 4 · LimitedFinal report
Date
July 28, 2022, 12:05 local (20:05 UTC)
Place
McCarthy, AK · about 20 southeast of McCarthy, Alaska, near Big Bend Lakes
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N82735Piper PA-18-150
Defining event
Takeoff: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20220728021679A
Case key
105653

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 improper decision to takeoff from an unimproved airstrip with a high density altitude which degraded its climb performance and led to a collision with vegetation off the end of the airstrip.

Findings · 4

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: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 24 casesAll aircraft: 1,681 casesProbable cause
Temp/humidity/pressure: high density altitudeEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentPiper PA-18-150: 1 caseAll aircraft: 278 casesProbable cause
Terrain: rough terrainEnvironmental issues › Physical environment · Effect on operationPiper PA-18-150: 19 casesAll aircraft: 442 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 of the tailwheel-equipped airplane reported that, while departing a remote rough and soft unimproved airstrip, the airplane’s tail rose off the ground just before the abort point and the airplane lifted off and entered into ground effect. Due to the high density altitude, the airplane was unable to gain sufficient airspeed to clear vegetation at the end of the airstrip. The pilot aborted the take off and the airplane came to rest in vegetation off the end of the airstrip. The right elevator was substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N82735
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-7709183
Built
1977
Airframe hours
8,158.2
Engine
Lycoming O-320-B2B, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft - state · Public use
Operator
State Of Alaska
Registered owner
State Of Alaska
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 4, 2022 · 14.3 hours before
Destination
MYK · McCarthy, AK
Equipment
Satellite tracking device, Handheld GPS, Angle of attack indicator, Stall warning system

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
33
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
May 28, 2022
Seat
Front
Flight hours
969 total · 729 in this make and model · 833 as pilot in command · 84 in the last 90 days · 46 in the last 30 days · 5 in the last 24 hours
Role
Check pilot
Age
49
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Last flight review
May 19, 2021
Seat
Rear
Restraint
3-point
Flight hours
7,500 total · 5,000 in this make and model · 7,000 as pilot in command · 30 in the last 90 days · 10 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 5 knots
Temperature
50 °F

Docket · 4

The files NTSB released with the investigation on November 10, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 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 N82735 · 3

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