ANC20CA058

NTSB accident investigation · Piper PA 12 · Palmer, AK · June 6, 2020

Accident · No injuriesClass 4 · Data collectionFinal report
Date
June 6, 2020, 13:45 local (21:45 UTC)
Place
Palmer, AK
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N3824MPiper PA 12
Defining event
Initial climb: 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
Alaska Regional Office
FAA report
20200606007879A
Case key
101414

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 improper decision to load the airplane beyond its allowable gross weight limits, which resulted in an impact with a tree and collision with terrain.

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotPiper PA-12: 11 casesAll aircraft: 1,386 casesProbable cause
LoadingAircraft › Aircraft handling/service · Incorrect use/operationPiper PA-12: 1 caseAll aircraft: 35 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomePiper PA-12: 7 casesAll aircraft: 933 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 was departing in his float-equipped three-seat airplane with four souls onboard. After departure and during the initial climb the airplane’s right wing impacted a tree, the airplane rotated 180° and impacted terrain sustaining substantial damage to the wings, lift struts, fuselage and left horizontal stabilizer. The pilot reported no preaccident mechanical failures or malfunctions that would have precluded normal operations. In a conversation with the NTSB IIC shortly after the accident, the pilot provided weights that equated to a gross weight at the time of the accident of about 2011 pounds or 173 pounds over its approved maximum takeoff gross weight limit. In the NTSB Accident/Incident Reporting Form 6120.1 the pilot reported that the gross weight at the time of the accident was 1845 pounds or 7 pounds over its maximum takeoff gross weight limit. In the recommendation section of the NTSB Accident/Incident Reporting Form 6120.1, the pilot stated that the accident may have been prevented if he had taken a lighter load or less fuel.

Aircraft

Registration
N3824M
Reported as
Piper PA 12 (No Series)
Category
Airplane
Serial number
12-2744
Built
1947
Airframe hours
4,800
Engine
Lycoming O-320 SERIES, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 1, 2020
Airport
4AK6 · Wolf Lake
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
70
Injuries
None
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine sea
Last flight review
June 14, 2017
Seat
Front
Restraint
3-point
Flight hours
3,000 total · 3,000 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 46 °F
Altimeter
2975.00 inHg
Observed at
PAAQ, 6 nm away

Docket · 4

The files NTSB released with the investigation on August 3, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.9 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 N3824M · 2

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