- Date
- July 11, 2025, 08:30 local (14:30 UTC)
- Place
- Wahsatch, UT
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N817GDGary Weaver CCK-1865
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 17, 2025
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Western Pacific Region
- Parties
- FAA
- FAA report
- 20250711010969A
- Case key
- 200666
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 NTSB’s determination of the probable cause, and any contributing factors.
The pilot’s inability to maintain directional control following a collision with a boulder during an off airport precautionary landing.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.
Analysis
The pilot in the tailwheel-equipped airplane reported that he made a precautionary landing after observing slightly elevated engine exhaust gas temperatures. The pilot selected an off-airport grass covered surface and touched down. During the landing roll, the left main landing gear struck a boulder that was obscured by the grass, which resulted in the landing gear cabane V to break, and the left wing struck the ground. The pilot stated that he had no rudder authority or braking, and the airplane continued to slowly move left into a creek and nosed over. The airplane sustained substantial damage to the left wing lift strut and rudder. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.
Aircraft
- Registration
- N817GD
- Reported as
- Gary Weaver CCK-1865
- Category
- Airplane, amateur-built
- Serial number
- CCK-1865-0085
- Built
- 2015
- Airframe hours
- 650
- Engine
- Titan CC 340, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · May 1, 2025
- Departed
- 42U · Morgan, UT
- Equipment
- Angle of attack indicator, ADS-B, Stall warning system
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
- 49
- Injuries
- Minor
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Without waivers/limitations
- Last flight review
- April 15, 2025
- Seat
- Front
- Restraint
- 3-point
- Flight hours
- 150 total · 120 in this make and model · 100 as pilot in command · 50 in the last 90 days · 30 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 25 statute miles
- Lowest ceiling
- None
- Temperature
- 85 °F
- Observed at
- EVW, 12 nm away
Docket · 2
The files NTSB released with the investigation on October 17, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.9 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.