WPR23LA284

NTSB accident investigation · Boeing A75N1 · Red Lodge, MT · July 22, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
July 22, 2023, 10:00 local (16:00 UTC)
Place
Red Lodge, MT · KRED
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N53132Boeing A75N1
Defining event
Landing-flare/touchdown: 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
20230722012839A
Case key
192717

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 loss of directional control during landing with wind gusts, which resulted in a ground loop and collision with a fence.

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedBoeing A75N1: 2 casesAll aircraft: 3,958 casesProbable cause
Object/animal/substance: fence/fence postEnvironmental issues › Physical environment · Contributed to outcomeBoeing A75N1: 1 caseAll aircraft: 313 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Ability to respond/compensateBoeing A75N1: 1 caseAll aircraft: 1,199 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, while landing a tailwheel airplane, a gust of wind pushed the tail to the right. The pilot attempted to correct with rudder and differential braking; however, the airplane ground looped to the left and veered off the left side of the runway impacting a fence and substantially damaging the left wings. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N53132
Reported as
Boeing A75N1
Category
Airplane
Serial number
75-2923
Built
1942
Airframe hours
2,693.4
Engine
Pratt & Whitney R-985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 19, 2022
Departed
KRED · Red Lodge, MT
Destination
Same as departure
Airport
RED · Red Lodge, runway 16, 4,000 × 75 ft, grass/turf
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
57
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
November 30, 2022
Seat
Rear
Flight hours
19,200 total · 105 in this make and model · 8,195 as pilot in command · 201 in the last 90 days · 33 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 5 knots, gusting 10
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 36 °F
Altimeter
30.18 inHg
Observed at
KPOY, 27 nm away
METAR
KPOY 221635Z AUTO 12010KT 10SM CLR 27/02 A3018 RMK AO2

Docket · 2

The files NTSB released with the investigation on November 2, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 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.