# NTSB ERA21LA294: Turbine Cubs Of Wyoming PA-18 Super CUB, N507TC, Dinwiddie, VA, July 19, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: July 19, 2021, 19:40 local (23:40 UTC) - Place: Dinwiddie, VA - Coordinates: 37.02, -77.59 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.0200&lon=-77.5900&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Defining event: [Taxi: Nose over/nose down](https://openairdocs.org/ntsb-events/096) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Eastern Region Aviation - Parties: FAA FSDO - NTSB case key (mKey): 103518 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA21LA294 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103518/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103518 - Page: https://openairdocs.org/ntsb/ERA21LA294 ## Probable cause The pilot’s failure to maintain control while taxiing on soft ground, which resulted in a nose-over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Turbine Cubs Of Wyoming PA-18 SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05621AJ), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: pitch control](https://openairdocs.org/ntsb-findings/01062022): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Turbine Cubs Of Wyoming PA-18 SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/01062022/cases.md?model=05621AJ), [All aircraft, 526 cases](https://openairdocs.org/ntsb-findings/01062022/cases.md) - [Terrain](https://openairdocs.org/ntsb-findings/03021000): Environmental issues › Physical environment · Effect on operation; cases with it: [Turbine Cubs Of Wyoming PA-18 SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/03021000/cases.md?model=05621AJ), [All aircraft, 267 cases](https://openairdocs.org/ntsb-findings/03021000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Taxi: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Turbine Cubs Of Wyoming PA-18 SUPER CUB, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05621AJ), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot of the tailwheel bush airplane stated that he landed at a friend’s field (not an airstrip) and had never landed there before. The landing was uneventful, and the airplane touched down below 25 mph. After the airplane slowed further, the pilot attempted to taxi the airplane from the field to the driveway of the residence. The airplane subsequently traveled over soft ground and nosed over, coming to rest inverted. The pilot added that there were no preimpact mechanical malfunctions with the airplane. Examination of the airplane revealed substantial damage to the fuselage and vertical stabilizer. ## Aircraft - Registration: [N507TC](https://openairdocs.org/aircraft/N507TC), registered now, S/N 04-092, built 2006 (OpenAirDocs) - Reported make and model: TURBINE CUBS OF WYOMING LLC PA-18 SUPER CUB - Registry model: [Turbine Cubs Of Wyoming PA-18 SUPER CUB](https://openairdocs.org/model/turbine-cubs-of-wyoming-pa-18-super-cub) (registry code 05621AJ) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 04-092 - Year built: 2006 - Airframe hours: 214 - Engines: Lycoming O-320 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, December 17, 2020, 45 hours before - Departed: VA73, Matoaca, VA - Destination: Same as departure - Equipment: Handheld GPS, ADS-B ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 41; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review April 7, 2021; seat: front; restraint: 4-point; flight hours: 1,497 total, 27 in this make and model, 1,394 as pilot in command, 25 in the last 90 days, 13 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 70 °F - Altimeter: 30.03 inHg - Observed at: KPTB, 11 nm away - METAR: KPTB 192335Z AUTO 00000KT 10SM CLR 23/21 A3003 ## 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 20210719011239A](https://openairdocs.org/incident/20210719011239A), Jul 19, 2021: Turbine Cubs Of Wyoming LLC PA-18 SUPER CUB, Dewitt, VA, Substantial damage. Pilot stated he departed mazza airport, VA73, located in matoaca, VA at approximately 1915. Pilot was enroute to a friend's field (not an established grass… ## Docket (3 files) The files NTSB released with the investigation on January 25, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103518. 1.5 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 991 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12522376&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf - Interview summary (item 2, PDF, 1 page, 119 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12520996&FileExtension=pdf&FileName=Interview%20Summary-Rel.pdf - Photo array (item 3, PDF, 1 page, 405 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12522048&FileExtension=pdf&FileName=Photo%20Array-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.