# NTSB WPR11CA212: Piper PA-18-150, N9683P, Chandler, AZ, April 27, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: April 27, 2011, 14:00 local (21:00 UTC) - Place: Chandler, AZ - Coordinates: 33.268054, -111.806663 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.2681&lon=-111.8067&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 August 3, 2011 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 78986 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR11CA212 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/78986/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=78986 - Page: https://openairdocs.org/ntsb/WPR11CA212 ## Probable cause The pilot’s failure to maintain directional control during the landing roll. ## 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) ## 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) ## Analysis The pilot reported that she was practicing three-point takeoffs and landings in a tailwheel-equipped airplane. The first three takeoffs and landings were uneventful. During the landing roll of the fourth landing, the airplane began to veer to the left. The pilot applied full right rudder; however, the airplane continued to the left and exited the runway onto a dirt surface. As the pilot added full power to attempt to avoid a taxiway sign and return to the runway, the airplane briefly became airborne before pitching down and pivoting to the right. Subsequently, the left main landing gear collapsed and the left wing struck the ground resulting in substantial damage. The airplane skidded nose down until coming to a rest. The wind was reported to be from 110 degrees at 7 knots at the time of the accident. The pilot reported no mechanical failures or malfunctions that would have precluded normal flight. ## Factual narrative The pilot reported that she was practicing three-point touch-and-go landings in a tailwheel equipped airplane. The first three touch-and-goes were uneventful. During the landing roll of the fourth landing, the airplane began to veer to the left. The pilot applied full right rudder, however, the airplane continued to the left and exited the runway onto a dirt surface. As the pilot added full power to attempt to avoid a taxiway sign and reenter the runway surface, the airplane briefly became airborne before pitching down and pivoting to the right. Subsequently, the left main landing gear collapsed and the left wing struck the ground resulting in substantial damage. The airplane skidded nose down until coming to a rest. At the time of the accident, the wind was reported from 110 degrees at 7 knots. The pilot reported no mechanical failures or malfunctions that would have precluded normal flight. ## Aircraft - Registration: [N9683P](https://openairdocs.org/aircraft/N9683P), registered now, S/N 18-7509026 (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: 18-7509026 - Airframe hours: 3830 - Engines: LYCOMING O-320 SERIES 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Chandler Air Services Inc. - Registered owner: Airspeed Moore LLC - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, April 8, 2011, 33 hours before - Departed: CHD, Chandler, AZ - Destination: CHD, Chandler, AZ - Airport: CHD, Chandler Municipal Airport, runway 04L, 4,401 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 62; injuries: none; private; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; last flight review April 23, 2011; seat: front; flight hours: 622 total, 29 in this make and model, 389 as pilot in command, 29 in the last 90 days, 9 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 110° at 7 knots - Visibility: 40 statute miles - Lowest ceiling: none - Temperature: 81 °F, dew point 16 °F - Altimeter: 29.96 inHg - Observed at: CHD ## 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 20110427007839A](https://openairdocs.org/incident/20110427007839A), Apr 27, 2011: Piper PA-18-150, Chandler, AZ, Substantial damage. Interviewed pilot, audine holm. States she had conducted an hour of duel earlier that day in super cub. During that flight she completed several touch and… ## Other investigations on N9683P (1) 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 WPR14CA109](https://openairdocs.org/ntsb/WPR14CA109), Jan 26, 2014: Piper PA 18-150 (N9683P), Willcox, AZ, substantial damage. Probable cause: The pilot's decision to land off airport on unsuitable terrain that resulted in a collision with hidden objects. ## Docket (1 files) The files NTSB released with the investigation on May 19, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=78986. 444 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 444 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40347441&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.