# NTSB WPR26LA184: Vans RV-6A, N333PK, Kooskia, ID, May 11, 2026 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: May 11, 2026, 11:30 local (18:30 UTC) - Place: Kooskia, ID · Moose Creek APT (1U1) - Coordinates: 46.124845, -114.92247 - Nearby events: https://openairdocs.org/map.md?lat=46.1248&lon=-114.9225&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report July 9, 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 - NTSB case key (mKey): 202977 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR26LA184 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/202977/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=202977 - Page: https://openairdocs.org/ntsb/WPR26LA184 ## Probable cause The pilot’s collision with a hole in the runway surface during the landing roll, which resulted in a nose over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Effect on operation (probable cause); cases with it: [Kormylo Philip C RV6-A, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=05607JP), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Kormylo Philip C RV6-A, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=05607JP), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Kormylo Philip C RV6-A, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05607JP), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that during the landing roll on a grass strip, about halfway down the runway, the airplane’s nose landing gear struck a hole in the runway surface, which resulted in the airplane nosing over. The airplane came to rest inverted and sustained substantial damage to the vertical stabilizer and rudder. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N333PK](https://openairdocs.org/aircraft/N333PK), registered now, S/N PK-2 (OpenAirDocs) - Reported make and model: VANS RV-6A - Registry model: [Kormylo Philip C RV6-A](https://openairdocs.org/model/kormylo-philip-c-rv6-a) (registry code 05607JP) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: PK-2 - Year built: 1999 - Airframe hours: 740 - Engines: Lycoming O320-H2AD 170 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, December 8, 2025, 40 hours before - Departed: MAN, Nampa, ID - Destination: Same as departure - Airport: 1U1, Moose Creek Ranger Station, runway 04, 2,300 × 200 ft, grass/turf - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review May 10, 2024; seat: left; restraint: 4-point; flight hours: 1,400 total, 700 in this make and model, 1,400 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Lowest ceiling: none - Temperature: 70 °F, dew point 39 °F - Altimeter: 30.14 inHg - Observed at: KP69, 28 nm away - METAR: METAR KP69 111752Z AUTO VRB05KT 21/04 A3014 RMK AO1 SLP193 T02110039 10228 20078 58014 ## Docket (3 files) The files NTSB released with the investigation on July 9, 2026, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=202977. 4.4 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 10 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20450772&FileExtension=pdf&FileName=WPR26LA184%20-%206120.1%20-%20Pilot_flat_Redacted-Rel.pdf - Memorandum for record a�� telephone interview, pilot (item 2, PDF, 1 page, 96 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20451225&FileExtension=pdf&FileName=WPR26LA184%20-%20MOR%20-Pilot_Redacted-Rel.pdf - Photos (item 3, PDF, 3 pages, 2 photos, 2.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20450103&FileExtension=pdf&FileName=WPR26LA184%20-%20Photos_Redacted-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.