# NTSB CEN25LA333: Parks Fokker D-VII Replica, N18852, Englewood, CO, August 22, 2025 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: August 22, 2025, 08:44 local (14:44 UTC) - Place: Englewood, CO - Coordinates: 39.570961, -104.84175 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.5710&lon=-104.8418&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 23, 2025 - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Central Region - Parties: FAA - NTSB case key (mKey): 200837 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN25LA333 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200837/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=200837 - Page: https://openairdocs.org/ntsb/CEN25LA333 ## Probable cause A malfunction of the tailwheel which resulted in a runway excursion and ground loop. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system: nose/tail landing gear](https://openairdocs.org/ntsb-findings/01023220): Aircraft › Aircraft systems · Malfunction (probable cause); cases with it: [Parks FOKKER D-VII REPLICA, 1 case](https://openairdocs.org/ntsb-findings/01023220/cases.md?model=0566301), [All aircraft, 185 cases](https://openairdocs.org/ntsb-findings/01023220/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Attain/maintain not possible (probable cause); cases with it: [Parks FOKKER D-VII REPLICA, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=0566301), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/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: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) (defining event); cases with it: [Parks FOKKER D-VII REPLICA, 1 case](https://openairdocs.org/ntsb-events/330/sequence.md?model=0566301), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md) ## Analysis The pilot reported that during the landing roll the tailwheel malfunctioned, which resulted in a runway excursion and ground loop. The airplane sustained substantial damage to the upper left wing and lower right wing. The pilot submitted a photo taken just before touch down that showed the tailwheel not locked into position and was deflected to the left as the rudder was deflected to the right. ## Aircraft - Registration: [N18852](https://openairdocs.org/aircraft/N18852), registered now, S/N 20, built 1979 (OpenAirDocs) - Reported make and model: PARKS FOKKER D-VII REPLICA - Registry model: [Parks FOKKER D-VII REPLICA](https://openairdocs.org/model/parks-fokker-d-vii-replica) (registry code 0566301) (OpenAirDocs) - Registry engine: [Fairchild 6-440 series](https://openairdocs.org/engine/fairchild-6-440-series) (registry code 26003, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 20 - Year built: 1979 - Engines: Ranger 6-440-C5 200 hp reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Registered owner: Lafayette Foundation Inc - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, August 16, 2025 - Departed: 18V, Hudson, CO - Destination: Same as departure - Airport: KAPA, Centennial, runway 10/28, 4,800 × 75 ft, asphalt - Equipment: Electronic flight bag or handheld device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 43; injuries: none; private; airplane ratings: single-engine land; medical: basicmed; last flight review September 14, 2023; seat: single; restraint: 4-point; flight hours: 1,371 total, 10.2 in this make and model, 1,312.4 as pilot in command, 114.4 in the last 90 days, 40.2 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 20,000 ft broken - Temperature: 70 °F, dew point 39 °F - Altimeter: 30.38 inHg - Observed at: KAPA, 1 nm away - METAR: KAPA 221453Z 36004KT 10SM FEW070 SCT120 BKN220 22/09 A3026 RMK AO2 SLP165 T02220094 53005 ## 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 20250822011379A](https://openairdocs.org/incident/20250822011379A), Aug 22, 2025: Parks FOKKER D-VII REPLICA, Centennial, CO, Substantial damage. On 08/22/2025 the PIC of [privacy data omitted] flew to apa for an air demonstration the following day. Upon landing the PIC noted that the aircraft started to… ## Docket (2 files) The files NTSB released with the investigation on October 23, 2025, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=200837. 779 KB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 314 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19257838&FileExtension=pdf&FileName=6120%20-%20Pilot_Redacted-Rel.pdf - Photos (item 2, PDF, 4 pages, 3 photos, 465 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19258493&FileExtension=pdf&FileName=Photos-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.