WPR23LA280

NTSB accident investigation · Piper PA-12S · Kalispell, MT · July 21, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
July 21, 2023, 08:00 local (14:00 UTC)
Place
Kalispell, MT · Airport
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N48MRPiper PA-12S
Defining event
Landing-landing roll: 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
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20230721012849A
Case key
192683

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 of the airplane during landing with a crosswind.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-12S: 1 caseAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-12S: 1 caseAll aircraft: 3,958 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Response/compensationPiper PA-12S: 1 caseAll aircraft: 1,008 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 of the tailwheel-equipped airplane reported that, during the landing roll with a right crosswind, he felt the right-wing lift, causing the airplane to veer to the left. He attempted to correct with right rudder; however, the airplane ground looped and came to rest in a nosed down position. The airplane sustained substantial damage to the right aileron. The pilot reported no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N48MR
Reported as
Piper PA-12S
Category
Airplane
Serial number
12-2583
Built
1947
Airframe hours
2,926
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 2, 2022 · 11 hours before
Departed
58S · Whitefish, MT
Destination
Same as departure
Airport
GPI · Glacier Park International Airport, runway 2, 9,007 × 150 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
60
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
December 13, 2022
Seat
Front
Flight hours
303 total · 30 in this make and model · 283 as pilot in command · 10 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 46 °F
Altimeter
30.12 inHg
Observed at
KGPI, 1 nm away
METAR
KGPI 211455Z 06004KT 10SM CLR 22/08 A3012 RMK AO2 SLP176 T02220083 51007 $

Docket · 2

The files NTSB released with the investigation on November 16, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.0 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.