ANC25LA041

NTSB accident investigation · Piper PA-18A 150 · Susitna, AK · May 23, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
May 22, 2025, 19:10 local (May 23, 2025, 03:10 UTC)
Place
Susitna, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1364CPiper PA-18A 150
Defining event
Landing: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report October 23, 2025
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA/FSDO
FAA report
20250523012749A
Case key
200226

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 encounter with shifting winds during landing, which resulted in a loss of airspeed and altitude, and subsequent contact with water.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-18A 150: 18 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18A 150: 3 casesAll aircraft: 1,681 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18A 150: 1 caseAll aircraft: 1,310 casesProbable cause
Wind: sudden wind shiftEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-18A 150: 1 caseAll aircraft: 114 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 reported that while on landing approach to a remote river sandbar in gusty wind conditions, the headwind rapidly decreased and the airplane lost airspeed and began to descend. The pilot applied full engine power in an attempt to arrest the descent; however, the wheels contacted the water, and the airplane nosed over and came to rest inverted. The airplane sustained substantial damage to the right wing struts. The pilot reported there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N1364C
Reported as
Piper PA-18A 150
Category
Airplane
Serial number
18-2613
Airframe hours
3,800
Engine
Lycoming O-290 SERIES, 140 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · January 14, 2025
Departed
PALH · Anchorage, AK
Destination
Same as departure
Equipment
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
32
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
March 25, 2025
Seat
Front
Restraint
4-point
Flight hours
5,127 total · 450 in this make and model · 5,127 as pilot in command · 118 in the last 90 days · 14 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
9,500 ft overcast
Temperature
55 °F, dew point 34 °F
Altimeter
29.90 inHg
Observed at
AWS, 27 nm away
METAR
PAWS 230256Z AUTO VRB03KT 10SM OVC095 13/01 A2990 RMK AO2 SLP128 T01280011 58008

Docket · 2

The files NTSB released with the investigation on October 23, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.3 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 N1364C · 1

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