# NTSB CEN20CA238: Great Lakes 2T 1A, N856L, Cambridge, OH, June 20, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Data collection · Final report - Date: June 20, 2020, 10:44 local (14:44 UTC) - Place: Cambridge, OH - Coordinates: 39.974998, -81.577499 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.9750&lon=-81.5775&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: FAA Flight Standards District Office - NTSB case key (mKey): 101467 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN20CA238 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/101467/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=101467 - Page: https://openairdocs.org/ntsb/CEN20CA238 ## Probable cause The pilot’s failure to maintain directional control during landing, which resulted in the airplane exiting the runway and striking a ditch. ## 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: [Great Lakes 2T-1A, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=3910106), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Great Lakes 2T-1A, 2 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=3910106), [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: [Great Lakes 2T-1A, 2 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=3910106), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490); cases with it: [Great Lakes 2T-1A, 1 case](https://openairdocs.org/ntsb-events/490/sequence.md?model=3910106), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The pilot reported that after landing the tailwheel equipped airplane, he applied brake during the landing roll and the airplane started to turn. He applied rudder to correct but overcorrected and the airplane oscillated and then went off the left side of the runway. The airplane subsequently struck a ditch next to the runway. The airplane sustained substantial damage to the right lower wing and the right horizontal tail and elevator. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N856L](https://openairdocs.org/aircraft/N856L), registered now, S/N 117, built 1930 (OpenAirDocs) - Reported make and model: Great Lakes 2T 1A (Undesignat) - Registry model: [Great Lakes 2T-1A](https://openairdocs.org/model/great-lakes-2t-1a) (registry code 3910106) (OpenAirDocs) - Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 117 - Year built: 1930 - Airframe hours: 1422 - Engines: Lycoming IO-360-B1E 180 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 16, 2019 - Departed: CDI, Cambridge, OH - Destination: CDI, Cambridge, OH - Airport: CDI, Cambridge Municipal Airport, runway 22, 4,298 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; injuries: none; private; airplane ratings: single-engine land; medical: class 3; seat: rear; restraint: 4-point; flight hours: 458 total, 99 in this make and model, 358 as pilot in command, 3 in the last 90 days, 1 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 75 °F, dew point 66 °F - Altimeter: 30.06 inHg - Observed at: CDI ## 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 20200620018949A](https://openairdocs.org/incident/20200620018949A), Jun 20, 2020: Great Lakes 2T-1A, Cambridge, OH, Substantial damage. N856L departed the prepared surface during landing rollout at Cambridge municipal(kcdi)on 06/20/2020. Aircraft came to a stop in an adjacent creek suffering… ## Docket (2 files) The files NTSB released with the investigation on October 9, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=101467. 3.9 MB in all. - Photographs of the accident airplane (item 1, PDF, 3 pages, 841 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=9933257&FileExtension=pdf&FileName=Docket%20Photo%20array-Rel.pdf - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 2, PDF, 7 pages, 3.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=9951595&FileExtension=pdf&FileName=6120_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.