ANC21LA021

NTSB accident investigation · Piper PA-20 · Anchorage, AK · March 6, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
March 6, 2021, 12:55 local (21:55 UTC)
Place
Anchorage, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N7054KPiper PA-20
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
20210306001099A
Case key
102729

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot’s failure to maintain directional control during takeoff in gusty tailwind conditions, which resulted in a runway excursion and nose down.

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-20: 20 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotPiper PA-20: 2 casesAll aircraft: 1,391 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-20: 2 casesAll aircraft: 594 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 reported that, during takeoff in the tailwheel-equipped airplane, he had about a 3-knot tailwind. When the airplane was at about 40 mph indicated airspeed, he applied forward pressure to the control yoke, and as the tail lifted off the ground the airplane encountered a gust of wind. Subsequently, the airplane veered abruptly to the left, he overcorrected, and the airplane exited the left side of the runway and impacted a snow berm coming to rest nose down. The airplane sustained substantial damage to the right wing and fuselage. The pilot reported no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N7054K
Reported as
Piper PA-20
Category
Airplane
Serial number
20-161
Built
1950
Airframe hours
4,035.14
Engine
Lycoming 0-290-D, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 15, 2020
Airport
MRI · Merrill Fld, runway 16, 2,640 × 75 ft, asphalt
Equipment
None

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
34
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
July 3, 2020
Seat
Left
Restraint
Lap only
Flight hours
125 total · 25 in this make and model · 52 as pilot in command · 25 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots
Visibility
10 statute miles
Lowest ceiling
6,000 ft broken
Temperature
30 °F, dew point 12 °F
Altimeter
29.76 inHg
Observed at
PAMR
METAR
PAMR 062223Z 36005KT 10SM BKN050 OVC060 M01/M11 A2976 RMK AO2 T10111111 $

Docket · 2

The files NTSB released with the investigation on November 12, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.1 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.