# NTSB WPR11CA326: Maule M-7-235C, N6YM, Tonasket, WA, July 11, 2011 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: July 11, 2011, 14:50 local (21:50 UTC) - Place: Tonasket, WA - Coordinates: 48.705001, -119.439445 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=48.7050&lon=-119.4394&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Landing area overshoot](https://openairdocs.org/ntsb-events/380) - Highest injury: Minor injuries - Injuries: 2 minor - Status: Completed, report October 6, 2011 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 81108 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR11CA326 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/81108/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=81108 - Page: https://openairdocs.org/ntsb/WPR11CA326 ## Probable cause The pilot's failure to achieve the proper touchdown point, which resulted in a landing overrun. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Effect on equipment; cases with it: [Maule M-7-235C, 2 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=5460110), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md) - [Info processing/decision: identification/recognition](https://openairdocs.org/ntsb-findings/02041510): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Maule M-7-235C, 1 case](https://openairdocs.org/ntsb-findings/02041510/cases.md?model=5460110), [All aircraft, 559 cases](https://openairdocs.org/ntsb-findings/02041510/cases.md) - [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Decision related to condition (probable cause); cases with it: [Maule M-7-235C, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=5460110), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/cases.md) - [Performance/control parameters: descent/approach/glide path](https://openairdocs.org/ntsb-findings/01062040): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Maule M-7-235C, 1 case](https://openairdocs.org/ntsb-findings/01062040/cases.md?model=5460110), [All aircraft, 809 cases](https://openairdocs.org/ntsb-findings/01062040/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: Landing area overshoot](https://openairdocs.org/ntsb-events/380) (defining event); cases with it: [Maule M-7-235C, 1 case](https://openairdocs.org/ntsb-events/380/sequence.md?model=5460110), [All aircraft, 400 cases](https://openairdocs.org/ntsb-events/380/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Maule M-7-235C, 8 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=5460110), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Maule M-7-235C, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=5460110), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot reported that he was landing long on a grass airstrip near his home. During the landing roll, the wind shifted from a crosswind to a tailwind, which pushed the airplane down the last part of the runway. The pilot commented that he tried to intentionally ground loop the airplane before it went over an embankment at the end of the runway, but was unable to gain any authority over the airplane due to the wind. Subsequently, the airplane traveled 20 feet down a small embankment which bent the front fuselage of the airplane up into the cockpit area. The pilot reported no mechanical failures or malfunctions that would have precluded normal flight. ## Factual narrative The pilot reported that he was landing long on a grass airstrip near his home. During the landing roll the wind shifted from a crosswind to a tailwind, which pushed the airplane down the last part of the runway. The pilot commented that he tried to intentionally ground loop the airplane before it went over an embankment at the end of the runway, but was unable to gain any authority over the airplane due to the wind. Subsequently, the airplane traveled 20 feet down a small embankment which bent the front fuselage of the airplane up into the cockpit area. The pilot reported no mechanical failures or malfunctions that would have precluded normal flight. ## Aircraft - Registration: [N6YM](https://openairdocs.org/aircraft/N6YM), registered now, S/N 25048C (OpenAirDocs) - Reported make and model: MAULE M-7-235C - Registry model: [Maule M-7-235C](https://openairdocs.org/model/maule-m-7-235c) (registry code 5460110) (OpenAirDocs) - Category: Airplane - Serial number: 25048C - Airframe hours: 353 - Engines: Lycoming IO-540-W1A5 235 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Dean Buzzard - Registered owner: Dean Buzzard - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 22, 2011, 64 hours before - Departed: na, Loomis, WA - Destination: na, Tonasket, WA - Airport: NA, Private Grass Strip ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: minor; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review July 30, 2010; seat: left; flight hours: 965 total, 195 in this make and model, 965 as pilot in command, 33 in the last 90 days, 11 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 45 °F - Altimeter: 29.79 inHg - Observed at: KOMK, 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 20110711013899A](https://openairdocs.org/incident/20110711013899A), Jul 11, 2011: Maule M-7-235C, Tonasket, WA, Substantial damage. Airman landed aircraft at private residence airstrip in crosswind conditions. Just after touchdown, airman stated the wind shifted to a quartering to near full… ## Docket (2 files) The files NTSB released with the investigation on August 17, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=81108. 1.5 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 372 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40351811&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Photo 1. Image of airplane in ditch. From the FAA (item 2, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40351812&FileExtension=.PDF&FileName=Photo%201.%20Image%20of%20airplane%20in%20ditch.%20From%20the%20FAA-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.