ANC21LA012

NTSB accident investigation · Piper PA-14 · Anchorage, AK · January 25, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
January 24, 2021, 17:28 local (Jan 25, 2021, 02:28 UTC)
Place
Anchorage, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4265HPiper PA-14
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Dusk
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
FAA report
20210124000639A
Case key
102555

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 selection of an unsuitable snow-covered runway for landing practice, and the pilot under instruction’s failure to maintain directional control during a landing roll, which resulted in a loss of control in unpacked snow and a subsequent nose-over.

Findings · 3

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.

Runway/land/takeoff/taxi surface: snow/slush/ice covered surfaceEnvironmental issues › Physical environment · Contributed to outcomePiper PA-14: 1 caseAll aircraft: 219 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotPiper PA-14: 5 casesAll aircraft: 9,295 casesProbable cause
Info processing/decision: decision making/judgmentPersonnel issues › Action/decision · Instructor/check pilotPiper PA-14: 3 casesAll aircraft: 3,098 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 instructor pilot of the tailwheel-equipped airplane reported that he was conducting a tailwheel endorsement training flight for another instructor pilot who was seated in the right seat as the pilot flying. After the pilot under instruction conducted multiple touch-and-go landings on the maintained asphalt runway, the instructor pilot decided to have the pilot conduct a touch-and-go on a snow-covered runway that was used by ski-equipped airplanes in the winter. The pilot landed in the center of the runway where the snow had been packed down by skis; however, the airplane drifted right after touchdown and the pilot attempted to correct back to the middle with the instructor pilot’s assistance. The right main landing gear tire “caught unpacked snow” which caused the airplane to turn rapidly right and flip over onto its back. The vertical stabilizer and right wing lift strut sustained substantial damage. The Federal Aviation Administration’s master airport information states that the runway is used seasonally as a snow runway (ski-equipped aircraft use recommended to minimize wheel rutting.) The instructor pilot was very familiar with the airport, where his flight training school was located. He likely knew that the runway was normally used for ski-equipped airplanes, and that unpacked snow or wheel ruts from other airplanes were potential hazards during the instructional flight. The instructor pilot stated that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N4265H
Reported as
Piper PA-14
Category
Airplane
Serial number
14-69
Built
1948
Airframe hours
3,713.5
Engine
Lycoming 0-320-B2B, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Angel Aviation Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 27, 2020
Destination
Same as departure
Airport
MRI · Merrill Fld, runway 05/23, 2,000 × 60 ft, snow
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
62
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land, Multi-engine sea
Instrument ratings
Airplane
Medical
BasicMed, Without waivers/limitations
Last flight review
December 13, 2020
Seat
Left
Restraint
4-point
Flight hours
15,000 total · 500 in this make and model · 14,000 as pilot in command · 20 in the last 90 days · 14 in the last 30 days · 1 in the last 24 hours
Role
Pilot
Age
21
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
October 14, 2020
Seat
Right
Restraint
4-point
Flight hours
793 total · 1 in this make and model · 735 as pilot in command · 251 in the last 90 days · 88 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
32 °F, dew point 27 °F
Altimeter
29.93 inHg
Observed at
PAMR, 1 nm away
METAR
PAMR 250153Z 00000KT 10SM OVC075 00/M03 A2993 RMK AO2 SLP137 T00001033 $

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.