# NTSB CEN12CA465: Mooney M20J, N339PB, Oshkosh, WI, July 21, 2012 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Data collection · Final report - Date: July 21, 2012, 16:20 local (21:20 UTC) - Place: Oshkosh, WI - Coordinates: 43.985, -88.561668 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.9850&lon=-88.5617&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: Serious injuries - Injuries: 1 serious, 1 uninjured - Status: Completed, report October 9, 2012 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA-MKE-FSDO - NTSB case key (mKey): 84402 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN12CA465 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/84402/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=84402 - Page: https://openairdocs.org/ntsb/CEN12CA465 ## Probable cause The pilot’s excessive airspeed at touchdown and his loss of control of the airplane during the landing roll. ## 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: [Mooney M20J, 36 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=5870219), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Mooney M20J, 10 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=5870219), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/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: [Mooney M20J, 7 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=5870219), [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. - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Mooney M20J, 11 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=5870219), [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: [Mooney M20J, 21 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=5870219), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Mooney M20J, 41 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=5870219), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot stated that, during landing, he was concentrating on touching down at a particular location, and he forced the airplane onto the runway at an airspeed that was too fast. The airplane bounced two or three times and traveled off the right side of the runway/taxiway into the grass where it contacted a taxiway light. The pilot stated that the brakes were ineffective due to the speed and the grass. The airplane continued across a service road where it contacted six heavy military vehicles that were among a row of parked vehicles. Both wings and the firewall were substantially damaged. The pilot stated that there was nothing mechanically wrong with the airplane. ## Factual narrative The airplane was arriving at EAA AirVenture when the accident occurred. During AirVenture, the 6,300 foot long taxiway that parallels the right side of runway 36 is designated as runway 36R and is used for takeoffs and landings as determined by the control tower. In addition, there are four colored dots placed on runway 36L and pilots are issued landing instructions in reference to the dots. The pilot reported he was cleared to land on runway 36R, abeam the “yellow dot” which was on runway 36L. The yellow dot was located 2,900 feet from the runway threshold. The pilot stated he was concentrating on touching down at the yellow dot and he forced the airplane onto the runway at too fast of an airspeed. The airplane bounced two or three times and traveled off the right side of the runway/taxiway into the grass where it contacted a taxiway light. The pilot stated the brakes were ineffective due to the speed and the grass. The airplane continued across a service road where it contacted six heavy military vehicles that were among a row of parked vehicles. Both wings and the firewall were substantially damaged. The pilot stated there was nothing mechanically wrong with the airplane. ## Aircraft - Registration: [N339PB](https://openairdocs.org/deregistered/N339PB-2013-07-24), registration cancelled 2013-07-24, S/N 24-1221, built 1981 (OpenAirDocs) - Reported make and model: MOONEY M20J - Registry model: [Mooney M20J](https://openairdocs.org/model/mooney-m20j) (registry code 5870219) (OpenAirDocs) - Registry engine: [Lycoming I0360 SER A&C](https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (registry code 41511, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 24-1221 - Airframe hours: 5026 - Engines: LYCOMING IO-360 200 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: John C. Bartholomew - Registered owner: Bartholomew Patricia - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 10, 2012 - Departed: MSN, Madison, WI - Destination: OSH, Oshkosh, WI - Airport: OSH, Wittman Airport, runway 36R, 6,300 × 50 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 73; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review October 15, 2011; seat: left; flight hours: 2,886 total, 2,700 in this make and model, 2,867 as pilot in command, 40 in the last 90 days, 15 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 8 knots, gusting 14 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 63 °F - Altimeter: 30.00 inHg - Observed at: OSH ## 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 20120721016149A](https://openairdocs.org/incident/20120721016149A), Jul 21, 2012: Mooney M20J, Oshkosh, WI, Substantial damage. On July 21, 2012, at approximately 1620 CDT, a Mooney M20J airplane, N339PB, was substantially damaged when, on landing at Oshkosh, Wisconsin, it bounced… ## Docket (4 files) The files NTSB released with the investigation on August 13, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=84402. 1.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 816 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40374599&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Record of Interview (item 2, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40375139&FileExtension=.PDF&FileName=Record%20of%20Interview-Master.PDF - Winnebago Co. Sheriff's Department Report (item 3, .PDF, 381 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40374601&FileExtension=.PDF&FileName=Winnebago%20Co.%20Sheriff%27s%20Department%20Report-Redacted.PDF - 2012 AirVenture Oshkosh NOTAM Excerpt (item 4, .PDF, 117 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40375090&FileExtension=.PDF&FileName=2012%20AirVenture%20Oshkosh%20NOTAM%20Excerpt-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.