# NTSB WPR10CA243: Cessna 170B, N8379A, Moab, UT, May 15, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 15, 2010, 10:15 local (16:15 UTC) - Place: Moab, UT - Coordinates: 38.755001, -109.754722 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.7550&lon=-109.7547&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: 2 uninjured - Status: Completed, report July 1, 2010 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration FSDO - NTSB case key (mKey): 76015 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR10CA243 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76015/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76015 - Page: https://openairdocs.org/ntsb/WPR10CA243 ## 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: [Cessna 170B, 74 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072306), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Action: incorrect action performance](https://openairdocs.org/ntsb-findings/02041015): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna 170B, 3 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md?model=2072306), [All aircraft, 1,386 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md) - [Object/animal/substance: sign/marker](https://openairdocs.org/ntsb-findings/03022015): Environmental issues › Physical environment · Effect on equipment; cases with it: [Cessna 170B, 2 cases](https://openairdocs.org/ntsb-findings/03022015/cases.md?model=2072306), [All aircraft, 214 cases](https://openairdocs.org/ntsb-findings/03022015/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 170B, 84 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072306), [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 170B, 37 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2072306), [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 170B, 52 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072306), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot was practicing landings during a proficiency check ride. He was doing a wheel landing and noticed another airplane holding short for takeoff. He tried to expedite clearing the runway at the A-4 taxiway before reaching a speed slow enough to allow for a safe exit from the runway. He hit the brakes hard and lost directional control. The airplane skidded off the runway, and the tail hit the taxiway sign. The rear fuselage and empennage sustained substantial damage. ## Factual narrative The pilot was practicing landings during a proficiency check ride. He was doing a wheel landing, and noticed another airplane holding short. He stated that he tried to expedite clearing the runway at the A-4 taxiway before reaching a speed slow enough to allow for a safe exit from the runway. He hit the brakes hard; the airplane skidded off the runway and the tail hit the taxiway sign. The rear fuselage and empennage sustained substantial damage. ## Aircraft - Registration: [N8379A](https://openairdocs.org/aircraft/N8379A), registered now, S/N 25231, built 1952 (OpenAirDocs) - Reported make and model: CESSNA 170B - Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 25231 - Airframe hours: 4580 - Engines: Lycoming O-360-A1A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Clair A Roberts - Registered owner: Clair A Roberts - Airworthiness certificate: Standard, Normal; Standard, Utility - Last inspection: Annual, April 7, 2010, 14 hours before - Departed: CNY, Moab, UT - Destination: CNY, Moab, UT - Airport: CNY, Canyonlands, runway 21, 7,100 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review May 20, 2003; seat: left; flight hours: 1,153 total, 640 in this make and model, 1,045 as pilot in command, 2 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours - Check pilot; age 41; injuries: none; commercial; airplane ratings: multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review September 28, 2009; seat: right; flight hours: 2,664 total, 15 in this make and model, 2,580 as pilot in command, 45 in the last 90 days, 20 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 55 °F, dew point 41 °F - Altimeter: 30.13 inHg - Observed at: KCNY ## 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 20100515034049A](https://openairdocs.org/incident/20100515034049A), May 15, 2010: Cessna 170B, Moab, UT, Substantial damage. Students rough brake useage caused the aircraft to exit the runway prior to taxiway. The aircraft fuselage struck the A4 taxiway sign causing damage to skin… ## Other investigations on N8379A (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 MKC69D0133](https://openairdocs.org/ntsb/MKC69D0133), Sep 1, 1968: Cessna 170B (N8379A), Scottsbluff, NE, substantial damage ## Docket (1 files) The files NTSB released with the investigation on June 2, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76015. 530 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 530 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40330179&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.