CEN25LA398

NTSB accident investigation · Piper PA-60-601P · Del Norte, CO · September 27, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
September 27, 2025, 16:31 local (22:31 UTC)
Place
Del Norte, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N3635APiper PA-60-601P
Defining event
Landing-landing roll: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed · report January 9, 2026
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA
FAA report
20250927019709A
Case key
201741

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 loss of directional control during landing roll due to a flat tire.

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-60-601P: 1 caseAll aircraft: 3,958 casesProbable cause
Landing gear system: tire casingAircraft › Aircraft systems · FailurePiper PA-60-601P: 1 caseAll aircraft: 36 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

According to the pilot, the airplane landed on the runway and pulled hard to the right. He attempted to maintain the runway centerline, however, as the airplane slowed down, the airplane continued to pull hard to the right. The airplane exited the runway surface and went into the sage brush. The airplane sustained substantial damage to the lower fuselage. During a post-accident walk around, the pilot noticed that the right main landing gear tire was flat.

Aircraft

Registration
N3635A
Reported as
Piper PA-60-601P
Category
Airplane
Serial number
61P07748063387
Built
1980
Airframe hours
6,511.6
Engines
Lycoming IO-540-AA1A5, 350 horsepower, reciprocatingLycoming IO-540-AA1A5, 350 horsepower, reciprocating
Damage
Substantial damage
Flight
Executive/Corporate · Part 91
Registered owner
Cady Properties And Leasing LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 21, 2025
Departed
HYS · Hays, KS
Destination
Same as departure
Airport
RCV · Astronaut Kent Rominger, runway 06/24, 6,051 × 75 ft, asphalt
Equipment
Electronic primary flight display, Electronic multifunction display, Auto-pilot, 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Injuries
None
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 29, 2025
Seat
Left
Restraint
3-point
Flight hours
4,362 total · 253 in this make and model · 4,260 as pilot in command · 71 in the last 90 days · 32 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 8 knots
Visibility
10 statute miles
Lowest ceiling
12,000 ft broken
Temperature
68 °F, dew point 30 °F
Altimeter
30.24 inHg
Observed at
KRCV, 0.5 nm away
METAR
KRCV 272235Z AUTO 12008KT 10SM BKN120 20/M01 A3024 RMK AO2 LTG DSNT S AND W T02011014,M

Docket · 3

The files NTSB released with the investigation on January 9, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.1 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.