# NTSB ANC10CA077: Piper PA-18-150, N9730P, Wasilla, AK, August 27, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 26, 2010, 20:30 local (Aug 27, 2010, 04:30 UTC) - Place: Wasilla, AK - Coordinates: 61.571945, -149.539443 - Nearby events: https://openairdocs.org/map.md?lat=61.5719&lon=-149.5394&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: 1 uninjured - Status: Completed, report December 20, 2010 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: FAA FSDO-03 - NTSB case key (mKey): 77101 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC10CA077 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/77101/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=77101 - Page: https://openairdocs.org/ntsb/ANC10CA077 ## Probable cause The pilot's failure to maintain directional control during landing, resulting in a runway excursion and nose over. ## 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: [Piper PA-18-150, 98 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=7101828), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Piper PA-18-150, 160 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=7101828), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Terrain: rough terrain](https://openairdocs.org/ntsb-findings/03021015): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Piper PA-18-150, 19 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md?model=7101828), [All aircraft, 442 cases](https://openairdocs.org/ntsb-findings/03021015/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: [Piper PA-18-150, 109 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=7101828), [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: [Piper PA-18-150, 35 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=7101828), [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: [Piper PA-18-150, 115 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=7101828), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Piper PA-18-150, 83 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=7101828), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The private pilot was returning to his home airport from another local airport, operating the airplane under Title 14, CFR Part 91. He said after landing on the gravel runway, the airplane went off the right side of the runway, and vegetation caused it to pull hard to the right. The pilot said once off the runway, the airplane encountered a culvert and nosed over. He said there were no preaccident mechanical problems with the airplane, and that the airplane sustained substantial damage to the wings and lift struts. ## Factual narrative The private pilot was returning to his home airport from another local airport, operating the airplane under Title 14, CFR Part 91. He said after landing on the gravel runway, the airplane went off the right side of the runway, and vegetation caused it to pull hard to the right. The pilot said once off the runway, the airplane encountered a culvert and nosed over. He said there were no preaccident mechanical problems with the airplane, and that the airplane sustained substantial damage to the wings and lift struts. ## Aircraft - Registration: [N9730P](https://openairdocs.org/aircraft/N9730P), registered now, S/N 18-7609007, built 1975 (OpenAirDocs) - Reported make and model: PIPER PA-18-150 - Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18-7609007 - Airframe hours: 2464 - Engines: LYCOMING O-320 SERIES 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: David Conyngham - Registered owner: David Conyngham - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 17, 2010 - Departed: PAUO, Willow, AK - Destination: PAWS, Wasilla, AK - Airport: PAWS, Wasilla, runway 21R, 1,690 × 60 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 28; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review August 5, 2009; seat: front; flight hours: 100 total, 36 in this make and model, 43 as pilot in command, 22 in the last 90 days, 22 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 50 statute miles - Temperature: 61 °F - Altimeter: 29.77 inHg ## 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 20100826047509A](https://openairdocs.org/incident/20100826047509A), Aug 26, 2010: Piper PA-18-150, Wasilla, AK, Substantial damage. According to the pilot, the weather was good and the winds were calm. The pilot was practicing take offs and landings and on the last landing of the day he… ## Other investigations on N9730P (2) 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. - [NTSB ANC96LA121](https://openairdocs.org/ntsb/ANC96LA121), Aug 8, 1996: Piper PA-18 (N9730P), Arctic Village, AK, substantial damage. Probable cause: The airplane's low airspeed during final approach, and the pilot's delayed remedial action in correcting the low airspeed condition. - [NTSB MKC79FTG04](https://openairdocs.org/ntsb/MKC79FTG04), Mar 9, 1979: Piper PA-18 (N9730P), Goodrich, ND, destroyed ## Docket (1 files) The files NTSB released with the investigation on October 28, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=77101. 803 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 803 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40338415&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.