# NTSB CEN21LA188: Cessna 150M, N439WT, Tishomingo, OK, April 10, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: April 10, 2021, 13:30 local (18:30 UTC) - Place: Tishomingo, OK - Coordinates: 34.1985, -96.6745 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.1985&lon=-96.6745&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: No injuries - Injuries: 2 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; Will Rogers FSDO - NTSB case key (mKey): 102908 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN21LA188 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102908/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102908 - Page: https://openairdocs.org/ntsb/CEN21LA188 ## Probable cause The pilot’s decision to abort the takeoff on encountering a wind gust and his landing beyond the end of the runway that resulted in the airplane impacting a ditch collapsing the nose landing gear. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: lateral/bank control](https://openairdocs.org/ntsb-findings/01062023): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [All aircraft, 390 cases](https://openairdocs.org/ntsb-findings/01062023/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Wind: gusts](https://openairdocs.org/ntsb-findings/03034045): Environmental issues › Conditions/weather/phenomena · Effect on operation (probable cause); cases with it: [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md) - [Terrain: sloped/uneven terrain](https://openairdocs.org/ntsb-findings/03021017): Environmental issues › Physical environment · Contributed to outcome (probable cause); cases with it: [All aircraft, 270 cases](https://openairdocs.org/ntsb-findings/03021017/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Other weather encounter](https://openairdocs.org/ntsb-events/400); cases with it: [All aircraft, 1,127 cases](https://openairdocs.org/ntsb-events/400/sequence.md) - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Landing: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) - [Landing: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported he was taking off on personal flight when a gust of wind lifted the airplane’s wing, and the airplane became airborne during his corrective control input. The pilot continued the climbout and attempted to gain airspeed, but the airplane did not accelerate and seemed to slow. The pilot elected to land the airplane to avoid trees that were ahead of him. The airplane touched down on a grass area just beyond the end of the runway but impacted in a drainage ditch about 100 ft. beyond the departure end of the runway that collapsed the nose landing gear. The airplane sustained substantial damage to the engine mounts at the nose landing gear. A Federal Aviation Administration inspector reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operations and that the engine was making power at impact. At the time of the accident, the pilot was taking off on runway 35 with a quartering wind from the northwest. The pilot reported that he may have encountered wind shear over the treetops which might have kept him low and slow to accelerate. ## Aircraft - Registration: N439WT (not matched to a registry record) - Reported make and model: CESSNA 150M - Category: Airplane - Serial number: 15077917 - Year built: 1976 - Airframe hours: 5976 - Engines: Continental O-200 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Pilot - Registered owner: Deregistered - Expired - Airworthiness certificate: Standard, Utility - Airport: 0F9, Tishomingo Airpark, runway 35, 3,100 × 60 ft, asphalt - Equipment: Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 50; injuries: none; private; airplane ratings: single-engine land; medical: class 3; last flight review August 3, 2019; seat: left; flight hours: 412 total, 380 in this make and model, 8 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 12 knots, gusting 18 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 37 °F - Altimeter: 29.91 inHg - Observed at: ADM, 18 nm away ## 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 20210410005889A](https://openairdocs.org/incident/20210410005889A), Apr 10, 2021: Cessna 150M, Tishamingo, OK, Substantial damage. On April 10th, at 1330, a Cessna 150 aircraft aborted take-off, and came to rest approximately 500 feet after the end of the runway, at the tishomingo airport.… ## Docket (5 files) The files NTSB released with the investigation on September 23, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102908. 1.1 MB in all. - Request for pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 1 page, 38 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12704210&FileExtension=pdf&FileName=Email%20Request%20for%20NTSB%206120%20Form;%20N439WT_Redacted-Rel.pdf - Pilot statement (item 2, PDF, 1 page, 12 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12704286&FileExtension=pdf&FileName=FW_%20Cessna%20150%20tail%20number%20439WT%20Bradley%20Cottrell%20(Pilot%20statement)_Redacted-Rel.pdf - Record of correspondence - FAA (item 3, PDF, 1 page, 121 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12704917&FileExtension=pdf&FileName=RECORD%20OF%20CORRESPONDENCE%20FAA-Rel.pdf - Wreckage photo (item 4, PDF, 1 page, 818 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12704296&FileExtension=pdf&FileName=Photo-Rel.pdf - Weather (item 5, PDF, 3 pages, 147 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12704816&FileExtension=pdf&FileName=Weather-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.