# NTSB WPR25LA231: Gary Weaver CCK-1865, N817GD, Wahsatch, UT, July 11, 2025 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: July 11, 2025, 08:30 local (14:30 UTC) - Place: Wahsatch, UT - Coordinates: 41.21619, -111.14103 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.2162&lon=-111.1410&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - 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 - NTSB case key (mKey): 200666 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR25LA231 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200666/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=200666 - Page: https://openairdocs.org/ntsb/WPR25LA231 ## Probable cause The pilot’s inability to maintain directional control following a collision with a boulder during an off airport precautionary landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Attain/maintain not possible (probable cause) - [Object/animal/substance: debris/dirt/foreign object](https://openairdocs.org/ntsb-findings/03022055): Environmental issues › Physical environment · Effect on operation (probable cause) - [Use of equip/info: use of equip/system](https://openairdocs.org/ntsb-findings/02063015): Personnel issues › Task performance · Pilot ## 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 best describes what happened. - [Enroute: Miscellaneous/other](https://openairdocs.org/ntsb-events/900) - [Landing: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) ## Aircraft - Registration: [N817GD](https://openairdocs.org/deregistered/N817GD-2026-02-28), registration cancelled 2026-02-28, S/N CCK-1865-0085, built 2015 (OpenAirDocs) - Reported make and model: GARY WEAVER CCK-1865 - Registry model: [Gary Weaver CCK-1865](https://openairdocs.org/model/gary-weaver-cck-1865) (registry code 056338N) (OpenAirDocs) - Registry engine: [Cubcrafter CC340](https://openairdocs.org/engine/cubcrafter-cc340) (registry code 18050, 4 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: CCK-1865-0085 - Year built: 2015 - Airframe hours: 650 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; injuries: minor; 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 ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20250711010969A](https://openairdocs.org/incident/20250711010969A), Jul 11, 2025: Gary Weaver CCK-1865, Evanston, WY, Substantial damage. Summary: on July 11, 2025, [privacy data omitted] an experimental amateur built Gary Weaver CCK-1865 cubcrafter aircraft landed off airfield in Evanston,… ## Docket (2 files) The files NTSB released with the investigation on October 17, 2025, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=200666. 1.9 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 10 pages, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19329934&FileExtension=pdf&FileName=6120_1_Redacted-Rel.pdf - Investigative photograph (item 2, PDF, 2 pages, 345 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19330413&FileExtension=pdf&FileName=Photograph-Rel.pdf From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.