# NTSB WPR22LA121: Tuttle Bruce C Jungster I, N47BT, Rock Springs, WY, March 13, 2022 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: March 13, 2022, 09:45 local (15:45 UTC) - Place: Rock Springs, WY - Coordinates: 41.594222, -109.06519 - Nearby events: https://openairdocs.org/map.md?lat=41.5942&lon=-109.0652&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: 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: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 104767 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR22LA121 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/104767/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=104767 - Page: https://openairdocs.org/ntsb/WPR22LA121 ## Probable cause The pilot’s failure to maintain directional control during takeoff, which resulted in a runway excursion and impact with terrain. ## 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: [Tuttle Bruce C JUNGSTER I, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=056224O), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Tuttle Bruce C JUNGSTER I, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=056224O), [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. - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Tuttle Bruce C JUNGSTER I, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=056224O), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Tuttle Bruce C JUNGSTER I, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=056224O), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490); cases with it: [Tuttle Bruce C JUNGSTER I, 1 case](https://openairdocs.org/ntsb-events/490/sequence.md?model=056224O), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The pilot of the tailwheel equipped airplane reported that, during the takeoff roll, after the tailwheel came off the ground, the airplane veered left and exited the side of the runway. The pilot rotated the airplane to lift off the ground and remain in ground effect, but the main landing gear impacted a snowbank. The airplane nosed over and came to rest inverted, which resulted in substantial damage to the empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N47BT](https://openairdocs.org/deregistered/N47BT-2023-06-26), registration cancelled 2023-06-26, S/N 871106, built 2007 (OpenAirDocs) - Reported make and model: TUTTLE BRUCE C JUNGSTER I - Registry model: [Tuttle Bruce C JUNGSTER I](https://openairdocs.org/model/tuttle-bruce-c-jungster-i) (registry code 056224O) (OpenAirDocs) - Registry engine: [Continental O-200 series](https://openairdocs.org/engine/continental-o-200-series) (registry code 17402, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 871106 - Year built: 2007 - Airframe hours: 43 - Engines: Continental O-200 100 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, December 31, 2021, 2 hours before - Destination: LAR, Laramie, WY - Airport: RKS, Southwest Wyoming Regional, runway 21, 5,228 × 75 ft, asphalt - Equipment: Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 75; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review January 13, 2022; seat: single; restraint: 5-point; flight hours: 1,000 total, 2 in this make and model, 1,000 as pilot in command, 50 in the last 90 days, 20 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 280° at 12 knots - Visibility: 10 statute miles - Lowest ceiling: 5,000 ft broken - Temperature: 36 °F, dew point 21 °F - Altimeter: 29.90 inHg - Observed at: KRKS, 1 nm away - METAR: KRKS 131654Z AUTO 28012KT 10SM SCT045 BKN050 OVC070 02/M06 A2990 RMK AO2 SLP131 T00171056 ## 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 20220313003769A](https://openairdocs.org/incident/20220313003769A), Mar 13, 2022: Tuttle Bruce C JUNGSTER I, Rock Springs, WY, Substantial damage. On March 13, 2022 at 1545Z, N47BT, an amateur-built, experimental jungster 1 airplane, maneuvered off the south side of runway 21 during the takeoff roll at… ## Docket (2 files) The files NTSB released with the investigation on May 3, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=104767. 3.9 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 2.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13616897&FileExtension=pdf&FileName=6120%20fina_Redacted-Rel.pdf - Accident photographs (item 2, PDF, 2 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13616678&FileExtension=pdf&FileName=Accident%20Photographs-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.