# NTSB CEN18LA220: Beech A23, N8775M, Sedalia, MO, June 7, 2018 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 7, 2018, 16:45 local (21:45 UTC) - Place: Sedalia, MO - Coordinates: 38.7075, -93.175834 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.7075&lon=-93.1758&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: 2 uninjured - Status: Completed, report June 3, 2020 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA FSDO - NTSB case key (mKey): 97442 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN18LA220 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/97442/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=97442 - Page: https://openairdocs.org/ntsb/CEN18LA220 ## Probable cause The pilot’s loss of directional control during the landing rollout due to the unexpected wind shift, which resulted in a runway excursion. ## 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: [Beech A23, 3 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=1151204), [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: [Beech A23, 5 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=1151204), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: sudden wind shift](https://openairdocs.org/ntsb-findings/03034010): Environmental issues › Conditions/weather/phenomena · Contributed to outcome (probable cause); cases with it: [Beech A23, 1 case](https://openairdocs.org/ntsb-findings/03034010/cases.md?model=1151204), [All aircraft, 114 cases](https://openairdocs.org/ntsb-findings/03034010/cases.md) - [Object/animal/substance: runway/taxi/approach light](https://openairdocs.org/ntsb-findings/03022012): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Beech A23, 1 case](https://openairdocs.org/ntsb-findings/03022012/cases.md?model=1151204), [All aircraft, 106 cases](https://openairdocs.org/ntsb-findings/03022012/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: [Beech A23, 3 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=1151204), [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: [Beech A23, 4 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=1151204), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot was conducting touch-and-go landings and had landed uneventfully four times. The fifth touchdown was soft; however, the airplane suddenly turned about 90° to the left. The pilot applied right rudder and reduced the throttle to idle. The airplane departed the runway surface, during which the right horizontal stabilizer struck a light post and sustained substantial damage. The pilot reported that the left brake had locked while braking on rollout. A functional check of the braking system and flight controls did not reveal any mechanical malfunctions or failures that would have precluded normal operation; both left and right wheel brake mechanisms functioned properly. Reported wind conditions about the time of the accident were wind from 230° at 7 knots. However, the pilot indicated that he had checked the local weather about 20 minutes before landing, which reported wind from 100° at 3 knots. Therefore, the crosswind component would have been about 130° opposite, and 4 knots increased, from what the pilot had previously received. The pilot likely lost directional control of the airplane during the landing due to the unexpected wind shift. ## Factual narrative On June 7, 2018, about 1645 central daylight time, a Beech A23 airplane, N8775M, sustained substantial damage following a runway excursion during landing rollout at the Sedalia Municipal Airport (DMO), Sedalia, Missouri. The private pilot and one passenger were not injured. Visual meteorological conditions prevailed and a flight plan was not filed. The airplane was registered to and operated by a private individual. The personal flight was conducted under the provisions of Title 14 Federal Code of Regulations Part 91. The flight originated about 1600 from the Cape Girardeau Regional Airport (CGI), Cape Girardeau, Missouri. The pilot reported that after 4 normal touch and go landings, he set up for another landing on runway 18. The pilot landed the airplane and the touchdown was soft. Suddenly, the airplane turned about 90-degrees to the left. The pilot applied right rudder and reduced the throttle to idle power. The airplane departed the runway surface, struck a runway light with the right horizontal stabilizer, and came to a stop. The pilot was able to taxi the airplane back onto the runway surface and return to the ramp. A postaccident examination revealed that the right horizontal stabilizer sustained substantial damage. The pilot reported to the responding Federal Aviation Administration (FAA) inspector that the left brake had locked while braking on rollout. A post-accident functional check of the brake system did not reveal any anomalies. Both left and right wheel brake mechanisms functioned properly when visually examined by the FAA inspector. Flight controls were also examined with no anomalies found. The pilot stated that the AWOS had reported wind from 100° at 3 knots about 20 minutes prior to the landing. A post accident weather review revealed that the reported wind conditions at DMO at 1640 were 230 degrees at 7 knots. ## Aircraft - Registration: [N8775M](https://openairdocs.org/aircraft/N8775M), registered now, S/N M-591 (OpenAirDocs) - Reported make and model: BEECH A23 - Registry model: [Beech A23](https://openairdocs.org/model/beech-a23) (registry code 1151204) (OpenAirDocs) - Registry engine: [Continental IO-346 series](https://openairdocs.org/engine/continental-io-346-series) (registry code 17033, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: M-591 - Year built: 1964 - Airframe hours: 3580.3 - Engines: Lycoming IO-346-A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 1, 2018, 20 hours before - Departed: CGI, Cape Girardeau, MO - Destination: DMO, Sedalia, MO - Airport: DMO, Sedalia Minicipal, runway 18, 5,500 × 100 ft, concrete - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 43; injuries: none; private; airplane ratings: single-engine land; medical: basicmed, without waivers/limitations; last flight review March 2, 2018; seat: left; restraint: 4-point; flight hours: 234.6 total, 114 in this make and model, 15.5 in the last 90 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 66 °F - Altimeter: 29.96 inHg - Observed at: DMO ## 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 20180607010759A](https://openairdocs.org/incident/20180607010759A), Jun 7, 2018: Beech A23, Sedalia, MO, Substantial damage. Aircraft landed on runway 18 at Sedalia Memorial Airport with winds reported at 7 knots from 230 degrees. On touchdown, the pilot stated the aircraft swerved… ## Other investigations on N8775M (1) 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. - [NTSB MKC67D0123](https://openairdocs.org/ntsb/MKC67D0123), Aug 15, 1966: Beech A23 (N8775M), Goddard, KS, substantial damage ## Docket (5 files) The files NTSB released with the investigation on January 23, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=97442. 860 KB in all. - Pilot Statement CEN18LA220 (item 1, .PDF, 94 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480174&FileExtension=.PDF&FileName=Pilot%20Statement%20CEN18LA220-Master.PDF - Memorandum for the Record Weather Information CEN18LA220 (item 2, .PDF, 199 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480175&FileExtension=.PDF&FileName=Memorandum%20for%20the%20Record%20Weather%20Information%20CEN18LA220-Master.PDF - Memorandum for the Record FAA Inspector Findings CEN18LA220 (item 3, .PDF, 180 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480176&FileExtension=.PDF&FileName=Memorandum%20for%20the%20Record%20FAA%20Inspector%20Findings%20CEN18LA220-Master.PDF - Airport Information CEN18LA220 (item 4, .PDF, 197 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480177&FileExtension=.PDF&FileName=Airport%20Information%20CEN18LA220-Master.PDF - Photo Array CEN18LA220 (item 5, .PDF, 190 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480178&FileExtension=.PDF&FileName=Photo%20Array%20CEN18LA220-Master.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.