SEA08CA102

NTSB accident investigation · Piper PA-22/20 · Three Forks, MT · April 3, 2008

Accident · No injuriesData collectionFinal report
Date
April 3, 2008, 17:05 local (23:05 UTC)
Place
Three Forks, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1139CPiper PA-22/20
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report May 28, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20080403014119A
Case key
67762

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 inadequate compensation for wind conditions during landing. A gusting crosswind was a contributing factor.

Findings · 4

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.

Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Not specifiedAll aircraft: 1,008 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Not specifiedAll aircraft: 1,199 casesProbable cause
Performance/control parameters: crosswind correctionAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 184 casesProbable cause
Runway/land/takeoff/taxi surfaceEnvironmental issues › Physical environment · Not specifiedAll aircraft: 253 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 was landing the tailwheel equipped airplane in a crosswind on runway 20 and reported that during the landing roll, "...a sudden gust from the west lifted the right wing and landing gear." As the pilot attempted to correct the situation, the airplane's left main landing gear strut collapsed, and the left wing struck the runway surface. The airplane received structural damage to left wing and fuselage. The wind at the time of the accident was from 110 degrees at 10 knots. No mechanical malfunctions were reported.

Factual narrative

The private pilot was landing the tail-wheel equipped airplane in a crosswind on runway 20. The pilot reported that during the landing rollout "...a sudden gust from the west lifted the right wing and landing gear." As the pilot attempted to correct the situation, the airplane's left main landing gear strut collapsed and the left wing struck the runway surface. The airplane received structural damage to left wing and fuselage. The wind at the time of the accident was from 110 degrees at 10 knots. No mechanical malfunctions were reported.

Aircraft

Registration
N1139C
Reported as
Piper PA-22/20
Category
Airplane
Serial number
22-975
Engine
Lycoming O-320, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Douglas S. Cairns
Registered owner
Douglas S. Cairns
Airworthiness certificate
Standard, Normal
Departed
8U8 · Townsend, MT
Destination
9S5 · Three Forks, MT
Airport
9S5 · Three Forks, runway 20, 5,100 × 60 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3
Seat
Left
Flight hours
440 total · 70 in this make and model · 46 in the last 90 days · 23 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 10 knots
Visibility
30 statute miles
Lowest ceiling
None
Observed at
9S5, 4 nm away

FAA reports on this event · 1

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