ANC10CA042

NTSB accident investigation · Piper PA-12 · Chugiak, AK · May 22, 2010

Accident · No injuriesData collectionFinal report
Date
May 22, 2010, 11:30 local (19:30 UTC)
Place
Chugiak, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N2581MPiper PA-12
Defining event
Approach-VFR pattern final: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report October 21, 2010
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration (Operations)
FAA report
20100522005799A
Case key
76107

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 failure to maintain a proper glide path while landing, which resulted in an in-flight collision with a tree, and the collapse of the main landing gear during touchdown.

Findings · 2

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.

Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomePiper PA-12: 7 casesAll aircraft: 933 cases
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-12: 3 casesAll aircraft: 809 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 private pilot was landing at a remote airstrip surrounded by trees at the completion of a Title 14, CFR Part 91 personal flight. The pilot stated that during the approach, just before touchdown, he allowed the airplane to drift left of his intended approach path, and the left main landing gear wheel struck a tree, which yawed the airplane to the left. During touchdown, the right main landing gear collapsed, followed by the collapse of the left main landing gear. The airplane sustained substantial damage to the wings, fuselage and empennage. The pilot stated that there were no preaccident mechanical problems with the airplane.

Factual narrative

The private pilot was landing at a remote airstrip surrounded by trees at the completion of a Title 14, CFR Part 91 personal flight. The pilot stated that during the approach, just before touchdown, he allowed the airplane to drift left of his intended approach path, and the left main landing gear wheel struck a tree, which yawed the airplane to the left. During touchdown, the right main landing gear collapsed, followed by the collapse of the left main landing gear. The airplane sustained substantial damage to the wings, fuselage and empennage. The pilot stated that there were no preaccident mechanical problems with the airplane.

Aircraft

Registration
N2581M
Reported as
Piper PA-12
Category
Airplane
Serial number
12-1049
Airframe hours
2,407
Engine
Lycoming O-320 SERIES, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Richard N. Sutliff
Registered owner
Page Spencer
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 20, 2010 · 2 hours before
Departed
MRI · Anchorage, AK
Destination
A13 · Chugiak, AK
Airport
A13 · Bold Airport, runway 32, 1,000 × 15 ft, gravel

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
62
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Seat
Front
Flight hours
2,100 total · 8 in this make and model · 2,000 as pilot in command · 10 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
48 °F, dew point 34 °F
Altimeter
30.04 inHg
Observed at
PAAQ, 15 nm away

Docket · 1

The files NTSB released with the investigation on August 6, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 580 KB 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 N2581M · 2

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