# NTSB WPR11CA466: Cessna 172S, N169ME, Phoenix, AZ, September 26, 2011 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: September 25, 2011, 19:20 local (Sep 26, 2011, 02:20 UTC) - Place: Phoenix, AZ - Coordinates: 33.688331, -112.082496 - Nearby events: https://openairdocs.org/map.md?lat=33.6883&lon=-112.0825&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: Minor injuries - Injuries: 1 minor, 1 uninjured - Status: Completed, report December 1, 2011 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 81893 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR11CA466 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/81893/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=81893 - Page: https://openairdocs.org/ntsb/WPR11CA466 ## Probable cause The pilot’s failure to maintain directional control during the landing rollout. ## 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: [Cessna 172S, 66 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072439), [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: [Cessna 172S, 206 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072439), [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: [Cessna 172S, 77 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072439), [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: [Cessna 172S, 76 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2072439), [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: [Cessna 172S, 118 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072439), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that he landed to the right of the centerline of the runway, and, while attempting to correct back to the centerline, the airplane exited the right side of the runway and impacted terrain. A postaccident examination of the airplane revealed substantial damage to the airplane's firewall. The pilot reported no mechanical anomalies with the airplane that would have precluded normal operation. ## Factual narrative The pilot reported that he landed to the right of centerline for runway 25 Left, and that while attempting to correct back to the centerline, the airplane exited the right side of the runway and impacted terrain. A post accident examination of the airplane revealed substantial damage to the airplane's firewall. The reported wind at the time of the accident was from 250 degrees at 8 knots. No mechanical malfunctions or failures were claimed, or identified in a post accident inspection. ## Aircraft - Registration: [N169ME](https://openairdocs.org/aircraft/N169ME), registered now, S/N 172S8449, built 2000 (OpenAirDocs) - Reported make and model: CESSNA 172S (S) - Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (registry code 2072439) (OpenAirDocs) - Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 172S8849 - Airframe hours: 2331 - Engines: Lycoming IO-360 230 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Westwind Aircraft Leasing LLC - Registered owner: Westwind Aircraft Leasing LLC - Airworthiness certificate: Standard, Normal; Standard, Utility - Last inspection: Annual, September 17, 2011, 31 hours before - Departed: VGT, Las Vegas, NV - Destination: DVT, Phoenix, AZ - Flight plan: VFR - Airport: DVT, Phoenix Deer Valley, runway 25L, 8,197 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 26; injuries: minor; private; airplane ratings: single-engine land; medical: class 1, without waivers/limitations; last flight review July 25, 2011; seat: left; flight hours: 106 total, 33 in this make and model, 38 as pilot in command, 45 in the last 90 days, 22 in the last 30 days, 6 in the last 24 hours - Other flight crew; age 32; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review September 6, 2011; seat: right; flight hours: 383 total, 320 in this make and model, 181 as pilot in command, 56 in the last 90 days, 10 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 250° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 91 °F, dew point 37 °F - Altimeter: 29.76 inHg - Observed at: DVT, 1 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 20110925025189A](https://openairdocs.org/incident/20110925025189A), Sep 25, 2011: Cessna 172S, Phoenix, AZ, Substantial damage. On 09/25/11, [privacy data omitted] was acting as a safety pilot for [privacy data omitted] on a part 91 flight from kvgt to kdvt. As they approached kdvt, the… ## Docket (2 files) The files NTSB released with the investigation on October 26, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=81893. 643 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 599 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40354937&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Weather Data (item 2, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40356233&FileExtension=.PDF&FileName=Weather%20Data-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.