# NTSB ANC08CA064: Cessna 172, N7598T, Chugiak, AK, May 10, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 10, 2008, 09:35 local (17:35 UTC) - Place: Chugiak, AK - Coordinates: 61.416389, -149.507217 - Nearby events: https://openairdocs.org/map.md?lat=61.4164&lon=-149.5072&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 June 30, 2008 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 67984 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC08CA064 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67984/pdf - Page: https://openairdocs.org/ntsb/ANC08CA064 ## Probable cause The pilot's failure to maintain control of the airplane during the landing roll. Contributing to the accident was an inadvertent ground loop/swerve. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 172A, 6 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072404), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [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 172A, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072404), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/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 172A, 2 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072404), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The private pilot was landing a tailwheel and tundra tire-equipped airplane on an asphalt runway which was about 4,010 feet long and about 100 feet wide. During the landing roll, the pilot reported that the airplane began to veer to the left. He applied full right rudder and added engine power to abort the landing, but the airplane continued to veer to the left. The pilot reduced engine power to idle, but the airplane ground looped, and departed the left side of the runway. The airplane received structural damage to the right wing spar, aileron, and flap, and the right main landing gear separated from the fuselage. The pilot reported that the airplane did not have a mechanical malfunction. ## Factual narrative The private pilot was landing a tailwheel and tundra tire-equipped airplane on an asphalt runway which was about 4,010 feet long and about 100 feet wide. During the landing roll, the pilot reported that the airplane began to veer to the left. He applied full right rudder and added engine power to abort the landing, but the airplane continued to veer to the left. The pilot reduced engine power to idle, but the airplane ground looped, and departed the left side of the runway. The airplane received structural damage to the right wing spar, aileron, and flap, and the right main landing gear separated from the fuselage. The pilot reported that the airplane did not have a mechanical malfunction. ## Aircraft - Registration: [N7598T](https://openairdocs.org/aircraft/N7598T), registered now, S/N 47198 (OpenAirDocs) - Reported make and model: Cessna 172 - Registry model: [Cessna 172A](https://openairdocs.org/model/cessna-172a) (registry code 2072404) (OpenAirDocs) - Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 47198 - Engines: Lycoming O-360-A1A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Patrick G. Ross - Airworthiness certificate: Standard, Normal - Departed: PAMR, Anchorage, AK - Destination: PABV, Chugiak, AK - Airport: PABV, Birchwood, runway 19R, 4,010 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; private; airplane ratings: single-engine land; medical: class 3; flight hours: 122 total, 113 in this make and model, 3 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 48 °F, dew point 34 °F - Altimeter: 29.68 inHg - Observed at: PABV ## 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 20080510838619A](https://openairdocs.org/incident/20080510838619A), May 10, 2008: Cessna 172A, Birchwood, AK, Substantial damage. (-23) On 10 may 2008 at 0935 local Alaska time 7598T, a Cessna tailwheel CE-172 on a private piloted, pleasure flight from merrill field, anchorage, AK landed,… 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.