# NTSB CEN21LA236: Berry TX-11C, N752T, Longmont, CO, May 24, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: May 24, 2021, 10:45 local (16:45 UTC) - Place: Longmont, CO - Coordinates: 40.16438, -105.16363 - Nearby events: https://openairdocs.org/map.md?lat=40.1644&lon=-105.1636&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: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 103155 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN21LA236 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103155/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103155 - Page: https://openairdocs.org/ntsb/CEN21LA236 ## Probable cause The pilot’s loss of directional control when his foot became stuck on a protruding bolt in the airplane’s floorboard. ## 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 · Not attained/maintained (probable cause); cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=05629U3), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Fuselage: equip attach fittings (on fus)](https://openairdocs.org/ntsb-findings/01035345): Aircraft › Aircraft structures · Design; cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-findings/01035345/cases.md?model=05629U3), [All aircraft, 3 cases](https://openairdocs.org/ntsb-findings/01035345/cases.md) - [Fuselage: floor panels (aux fuselage)](https://openairdocs.org/ntsb-findings/01035321): Aircraft › Aircraft structures · Design; cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-findings/01035321/cases.md?model=05629U3), [All aircraft, 1 case](https://openairdocs.org/ntsb-findings/01035321/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05629U3), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/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: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=05629U3), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=05629U3), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Berry Dan TX-11C, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05629U3), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that, during the landing roll in the experimental amateur built airplane, the heel of his shoe became caught on a protruding floorboard bolt and the airplane veered to the left. The airplane exited the left side of the runway, impacted a Visual Approach Slope Indicator light, nosed over, and came to rest upside down. The airplane sustained substantial damage to the rudder. The pilot reported that there were no mechanical failures or malfunctions with the airplane that precluded normal operation. ## Aircraft - Registration: [N752T](https://openairdocs.org/aircraft/N752T), registered now, S/N 1015, built 2012 (OpenAirDocs) - Reported make and model: BERRY TX-11C - Registry model: [Berry Dan TX-11C](https://openairdocs.org/model/berry-dan-tx-11c) (registry code 05629U3) (OpenAirDocs) - Registry engine: [Continental O-200 series](https://openairdocs.org/engine/continental-o-200-series) (registry code 17402, 4 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 1015 - Year built: 2012 - Airframe hours: 170 - Engines: Continental Motors 0-200 SERIES 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, October 31, 2020, 155 hours before - Airport: LMO, Vance Brand Airport, runway 29, 4,799 × 75 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 68; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: basicmed, unknown; last flight review August 14, 2020; seat: front; restraint: 4-point; flight hours: 2,330 total, 43 in this make and model, 2,100 as pilot in command, 6 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 63 °F, dew point 43 °F - Altimeter: 30.07 inHg - Observed at: KLMO - METAR: KLMO 241655Z AUTO 00000KT 10SM CLR 17/06 A3007 RMK AO2 T01740057 ## 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 20210524010009A](https://openairdocs.org/incident/20210524010009A), May 24, 2021: Berry Dan TX-11C, Longmont, CO, Substantial damage. On may 24, 2021 at approximately 1045 MDT, N752T, an experimental amateur built aircraft, model TX-11C veered off runway 29 on landing rollout at the Vance… ## Docket (2 files) The files NTSB released with the investigation on September 21, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103155. 4.9 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 8 pages, 2.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12609883&FileExtension=pdf&FileName=6120_Redacted2-Rel.pdf - On scene photos (item 2, PDF, 3 pages, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12400859&FileExtension=pdf&FileName=On%20Scene%20Photos-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.