ANC24LA002

NTSB accident investigation · Piper PA-18-150 · Wasilla, AK · November 4, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
November 4, 2023, 15:00 local (23:00 UTC)
Place
Wasilla, AK · IYS
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N3994ZPiper PA-18-150
Defining event
Landing-landing roll: Nose over/nose down
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 FSDO
FAA report
20231104018449A
Case key
193357

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 instructor pilot’s delayed action and over application of brakes which resulted in a nose-over.

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.

Info processing/decision: identification/recognitionPersonnel issues › Action/decision · Instructor/check pilotPiper PA-18-150: 8 casesAll aircraft: 559 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotPiper PA-18-150: 11 casesAll aircraft: 894 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Instructor/check pilotPiper PA-18-150: 160 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: surface speed/brakingAircraft › Aircraft oper/perf/capability · Incorrect use/operationPiper PA-18-150: 14 casesAll aircraft: 238 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 98 casesAll aircraft: 3,958 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

While conducting an instructional flight in a tailwheel-equipped airplane, during the landing phase, the pilot receiving instruction touched down and the airplane began to veer towards the edge of the runway surface. The instructor pilot reported that, due to limited visibility he was slow to correct the veer. The instructor pilot took control of the airplane and applied the brakes which resulted in a nose-over and substantial damage to the rudder and right wing strut. The instructor pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N3994Z
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-7943
Built
1963
Airframe hours
9,357
Engine
Lycoming O-320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · October 12, 2023
Departed
PAQ · Palmer, AK
Destination
Same as departure
Airport
IYS · Wasilla Airport, runway 22, 1,620 × 60 ft, gravel
Equipment
Unknown

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
56
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Multi-engine sea, Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 29, 2023
Seat
Rear
Restraint
4-point
Flight hours
8,395 total · 89 in this make and model · 5,593 as pilot in command · 13 in the last 90 days · 4 in the last 30 days · 4 in the last 24 hours
Role
Student pilot
Age
33
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
August 25, 2023
Seat
Front
Restraint
4-point
Flight hours
65 total · 2 in this make and model · 2 as pilot in command · 13 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
37 °F, dew point 36 °F
Altimeter
29.36 inHg
Observed at
AWS
METAR
PAWS 042256Z AUTO 00000KT 10SM CLR 03/02 A2936 RMK AO2 SLP947 T00280017

Docket · 2

The files NTSB released with the investigation on June 28, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.0 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 N3994Z · 2

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