WPR26LA156

NTSB accident investigation · Marshall Daniel R L-21 · Cody, WY · April 10, 2026

Accident · No injuriesClass 4 · LimitedFinal report
Date
April 10, 2026, 08:55 local (14:55 UTC)
Place
Cody, WY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N453HCMarshall Daniel R L-21
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report July 15, 2026
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
20260410005169A
Case key
202807

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 control of the airplane during the landing rollout, which resulted in a nose-over.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotMarshall Daniel R L-21: 1 caseAll aircraft: 9,295 casesProbable cause
Performance/control parametersAircraft › Aircraft oper/perf/capability · Incorrect use/operationMarshall Daniel R L-21: 1 caseAll aircraft: 1,269 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 he made several passes over his destination airport to assess the landing area and then completed one successful landing. During a second landing the pilot lost control of the airplane, which nosed over and came to rest inverted. The airplane sustained substantial damage to the rudder assembly and both wing struts. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N453HC
Reported as
Marshall Daniel R L-21
Category
Airplane, amateur-built
Serial number
001
Built
2005
Airframe hours
969.8
Engine
Lycoming O-360 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal; Special, Experimental (Special)
Last inspection
Annual · March 7, 2026
Departed
COD · Cody, WY
Destination
COD · Cody, WY
Airport
Sheep Mountain
Equipment
Handheld GPS, Electronic flight bag or handheld device, ADS-B, Onboard weather

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed
Last flight review
April 1, 2026
Seat
Front
Restraint
4-point
Flight hours
1,844.3 total · 98.5 in this make and model · 1,844.3 as pilot in command · 5.4 in the last 90 days · 3.4 in the last 30 days
Role
Pilot-rated passenger
Age
66
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, With waivers/limitations
Seat
Rear
Restraint
4-point
Flight hours
13,850 total

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 25 °F
Altimeter
30.11 inHg
Observed at
COD, 12 nm away
METAR
METAR KCOD 101456Z AUTO 22008KT 10SM CLR 08/M04 A3011 RMK AO2 SLP191 T00781044 58006 $

Docket · 3

The files NTSB released with the investigation on July 15, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.5 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.