# NTSB CEN11LA281: Reeves Avid Mark IV, N6313T, Brookfield, MO, April 2, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: April 2, 2011, 10:30 local (15:30 UTC) - Place: Brookfield, MO - Coordinates: 39.77, -93.012496 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.7700&lon=-93.0125&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 August 29, 2012 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 78846 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11LA281 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/78846/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=78846 - Page: https://openairdocs.org/ntsb/CEN11LA281 ## Probable cause The pilot’s failure to maintain directional control during landing, which resulted in the airplane departing the runway. ## 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: [Reeves Jimmy W AVID MARK IV, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=05605AK), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Landing gear system: nose/tail landing gear](https://openairdocs.org/ntsb-findings/01023220): Aircraft › Aircraft systems · Not specified; cases with it: [Reeves Jimmy W AVID MARK IV, 1 case](https://openairdocs.org/ntsb-findings/01023220/cases.md?model=05605AK), [All aircraft, 185 cases](https://openairdocs.org/ntsb-findings/01023220/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: Miscellaneous/other](https://openairdocs.org/ntsb-events/900); cases with it: [Reeves Jimmy W AVID MARK IV, 1 case](https://openairdocs.org/ntsb-events/900/sequence.md?model=05605AK), [All aircraft, 1,556 cases](https://openairdocs.org/ntsb-events/900/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Reeves Jimmy W AVID MARK IV, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=05605AK), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Reeves Jimmy W AVID MARK IV, 1 case](https://openairdocs.org/ntsb-events/060/sequence.md?model=05605AK), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Reeves Jimmy W AVID MARK IV, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=05605AK), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot said that before the accident flight he changed the tailwheel assembly, which resulted in an increase in tire width. He said that he made the change so that the tailwheel would "float" during the landing roll on turf runways. The pilot was landing at a local airport when the tailwheel experienced a severe shimmy on touchdown. The airplane started to pull and then veer off the left side of the runway and impacted a ditch, despite the pilot's rudder application. A postaccident examination of the airplane showed no preimpact anomalies. ## Factual narrative On April 2, 2011, about 1030 central daylight time, a Reeves Avid Mark IV, N6313T, veered off a runway during landing roll and impacted in a drainage ditch at North Central Missouri Regional Airport (MO8), Brookfield, Missouri. The private pilot and passenger were uninjured. The airplane sustained substantial damage to the fuselage. The airplane was registered to and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was not operating on a flight plan. The flight originated from the pilot's private airstrip near Brookfield, Missouri, about 1010 and was en route to MO8. The pilot said that he changed the tailwheel to a Matco tailwheel, part number WHLT-8W, based upon research he had done on the internet. The change resulted in an increase in tire width. He said that the change to a Matco tailwheel was made so that the tailwheel would "float" during landing rollout on turf runways. He reported that the Matco tailwheel accumulated a total time of 44 hours and 97 cycles. The pilot stated that shortly after a three-point touchdown on runway 36 the tailwheel experienced a severe shimmy, and the airplane started to pull to the left. The airplane continued to move towards the left side of the runway even with right rudder application. The airplane departed the left side of the runway and impacted in the drainage ditch. ## Aircraft - Registration: [N6313T](https://openairdocs.org/aircraft/N6313T), registered now, S/N 1564D, built 1997 (OpenAirDocs) - Reported make and model: Reeves Avid Mark IV - Registry model: [Reeves Jimmy W AVID MARK IV](https://openairdocs.org/model/reeves-jimmy-w-avid-mark-iv) (registry code 05605AK) (OpenAirDocs) - Registry engine: [Subaru ALL MDLS A/B](https://openairdocs.org/engine/subaru-all-mdls-a-b) (registry code 59050, 4 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 1564D - Airframe hours: 697 - Engines: Subaru - Stratus Built EA81 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Pilot - Registered owner: Pilot - Airworthiness certificate: Special, Experimental light sport (Special) - Last inspection: Condition, June 4, 2010 - Departed: NONE, Brookfield, MO - Destination: MO8, Brookfield, MO - Airport: MO8, North Central Missouri Regiona, runway 36, 4,003 × 75 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 48; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review October 9, 2010; seat: left; flight hours: 174 total, 55 in this make and model, 132 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 - Lowest ceiling: none - Temperature: 57 °F, dew point 28 °F - Altimeter: 30.02 inHg - Observed at: CDJ, 26 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 20110402005359A](https://openairdocs.org/incident/20110402005359A), Apr 2, 2011: Reeves Jimmy W AVID MARK IV, Brookfield, MO, Substantial damage. Pilot was practicing hard surface landings on runway 36 at the Brookfield, Missouri, airport (MO8). After touchdown, the tailwheel developed a severe shimmy… ## Docket (2 files) The files NTSB released with the investigation on July 6, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=78846. 1.0 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 955 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40370978&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Record of Conversation - Pilot (item 2, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40370441&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-%20Pilot-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.