# NTSB WPR11CA224: Maule M7, N1048T, Mammoth, AZ, May 16, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 16, 2011, 14:09 local (21:09 UTC) - Place: Mammoth, AZ - Coordinates: 32.739444, -110.534164 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=32.7394&lon=-110.5342&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report August 3, 2011 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Adminstration - NTSB case key (mKey): 79111 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR11CA224 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/79111/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=79111 - Page: https://openairdocs.org/ntsb/WPR11CA224 ## Probable cause The pilot's failure to maintain clearance from a tree during the landing roll. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Object/animal/substance: tree(s)](https://openairdocs.org/ntsb-findings/03022020): Environmental issues › Physical environment · Awareness of condition (probable cause); cases with it: [Maule M-7-235B, 1 case](https://openairdocs.org/ntsb-findings/03022020/cases.md?model=5460109), [All aircraft, 933 cases](https://openairdocs.org/ntsb-findings/03022020/cases.md) - [Object/animal/substance: tree(s)](https://openairdocs.org/ntsb-findings/03022020): Environmental issues › Physical environment · Response/compensation (probable cause); cases with it: [Maule M-7-235B, 1 case](https://openairdocs.org/ntsb-findings/03022020/cases.md?model=5460109), [All aircraft, 933 cases](https://openairdocs.org/ntsb-findings/03022020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Maule M-7-235B, 7 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=5460109), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Attention/monitoring: monitoring environment](https://openairdocs.org/ntsb-findings/02021545): Personnel issues › Psychological · Pilot (probable cause); cases with it: [Maule M-7-235B, 1 case](https://openairdocs.org/ntsb-findings/02021545/cases.md?model=5460109), [All aircraft, 809 cases](https://openairdocs.org/ntsb-findings/02021545/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: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) (defining event); cases with it: [Maule M-7-235B, 1 case](https://openairdocs.org/ntsb-events/490/sequence.md?model=5460109), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [Maule M-7-235B, 8 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=5460109), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Maule M-7-235B, 5 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=5460109), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that after a normal landing onto a dirt road, which was covered with loose dirt and gravel, the airplane's right wing collided with a tree. The airplane rotated to the right approximately 20 degrees and began skidding sideways. He attempted to correct with rudder and brakes but the airplane exited the road and subsequently nosed over. According to the pilot, clear skies and a light breeze prevailed at the time of the accident. The pilot reported that there were no preimpact mechanical malfunctions or failures of the airframe or engine that would have precluded normal flight. ## Factual narrative The pilot reported that after a normal landing onto a dirt road, which was covered with loose dirt and gravel, the airplane's right wing collided with a tree. The airplane rotated to the right approximately 20 degrees and began skidding sideways. He attempted to correct with rudder and brakes but the airplane exited the road and subsequently nosed over. According to the pilot, clear skies and a light breeze prevailed at the time of the accident. The pilot reported that there were no preimpact mechanical malfunctions or failures of the airframe or engine that would have precluded normal flight. ## Aircraft - Registration: [N1048T](https://openairdocs.org/aircraft/N1048T), registered now, S/N 23037C, built 1997 (OpenAirDocs) - Reported make and model: MAULE M7 (235B) - Registry model: [Maule M-7-235B](https://openairdocs.org/model/maule-m-7-235b) (registry code 5460109) (OpenAirDocs) - Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 23037C - Airframe hours: 1702 - Engines: LYCOMING O-540 235 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 subpart K - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 15, 2010, 80 hours before - Departed: 5AZ3, Queen Creek, AZ - Destination: E77, San Manuel, AZ - Airport: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; flight engineer, commercial, airline transport; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review October 24, 2010; seat: left; flight hours: 20,000 total, 415 in this make and model, 13,012 as pilot in command, 197 in the last 90 days, 53 in the last 30 days, 7 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 90 statute miles - Lowest ceiling: none - Temperature: 81 °F - Altimeter: 29.94 inHg - Observed at: E77, 11 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 20110516008909A](https://openairdocs.org/incident/20110516008909A), May 16, 2011: Maule M-7-235B, Substantial damage. Pilot attempted off-field landing on dirt road to explore ghost town. During landing, right wing struck mesquite tree causing aircraft to depart road and tip… ## Docket (2 files) The files NTSB released with the investigation on May 27, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=79111. 670 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 622 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40348373&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Record of Conversation (item 2, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40348375&FileExtension=.PDF&FileName=Record%20of%20Conversation-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.