# NTSB WPR20CA181: Mooney M20J, N201JK, Healdsburg, CA, June 5, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Data collection · Final report - Date: June 5, 2020, 13:30 local (20:30 UTC) - Place: Healdsburg, CA - Coordinates: 38.652778, -122.898612 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.6528&lon=-122.8986&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 101437 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR20CA181 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/101437/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=101437 - Page: https://openairdocs.org/ntsb/WPR20CA181 ## Probable cause The pilot's failure to maintain control of the airplane during the landing roll, which resulted in a landing gear collapse. ## 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) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: 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: 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 reported that on downwind for landing on runway 13, he observed that the wind tetrahedron indicated a west wind and the windsock was flapping around. While on base leg, the pilot experienced slight turbulence. The pilot reported that on touchdown, there were some "sudden gusts," and as he added normal braking, the right tire failed, which caused a loss of directional control and subsequent skid. The left main landing gear collapsed, and the airplane slid to a stop on the taxiway. The aft fuselage was substantially damaged. A witness reported that the airplane touched down about halfway down the runway with an estimated 15 knot tailwind. The pilot applied the brakes and the airplane skidded down the runway. Shortly after, the right tire "blew out," and the airplane continued to slide sideways down the runway. Subsequently, the left main landing gear collapsed, and the left wing and tail struck the runway. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N201JK](https://openairdocs.org/aircraft/N201JK), registered now, S/N 24-0040, built 1976 (OpenAirDocs) - Reported make and model: Mooney M20J (No Series) - Registry model: [Mooney M20J](https://openairdocs.org/model/mooney-m20j) (registry code 5870219) (OpenAirDocs) - Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 24-0040 - Year built: 1976 - Airframe hours: 3536.5 - Engines: Lycoming IO-360-A1B6D 200 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 20, 2020, 17 hours before - Departed: O69, Petaluma, CA - Destination: HES, Healdsburg, CA - Airport: HES, Healdsburg Muni, runway 13, 2,652 × 60 ft, asphalt - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; flight instructor, private, commercial, flight engineer, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review March 27, 2020; seat: left; restraint: lap only; flight hours: 20,200 total, 1,500 in this make and model, 4,325 as pilot in command, 40 in the last 90 days, 12 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 75 °F, dew point 52 °F - Altimeter: 29.72 inHg - Observed at: KSTS, 10 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 20200605011779A](https://openairdocs.org/incident/20200605011779A), Jun 5, 2020: Mooney M20J, Healdsburg, CA, Substantial damage. Aircraft landed on rwy 13 with a 15 knot swirling tailwind at Healdsburg muni airport. Started to leave the runway at the taxiway when the left main gear… ## Docket (3 files) The files NTSB released with the investigation on October 9, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=101437. 4.2 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 3.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=9906212&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf - Witness statements (item 2, PDF, 2 pages, 131 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=9906559&FileExtension=pdf&FileName=BHolloway_Redacted-Rel.pdf - Accident photo (FAA) (item 3, PDF, 2 pages, 605 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=10037513&FileExtension=pdf&FileName=WPR20CA181%20Photograph-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.