# NTSB ANC10CA052: Cessna 170B, N2886C, Palmer, AK, June 12, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 11, 2010, 17:00 local (Jun 12, 2010, 01:00 UTC) - Place: Palmer, AK - Coordinates: 61.641109, -149.288894 - Nearby events: https://openairdocs.org/map.md?lat=61.6411&lon=-149.2889&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: ANC FSDO - NTSB case key (mKey): 76350 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC10CA052 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76350/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76350 - Page: https://openairdocs.org/ntsb/ANC10CA052 ## Probable cause The pilot's failure to maintain directional control while landing in variable wind conditions. ## 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) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 170B, 91 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072306), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: variable wind](https://openairdocs.org/ntsb-findings/03034025): Environmental issues › Conditions/weather/phenomena · Contributed to outcome; cases with it: [Cessna 170B, 2 cases](https://openairdocs.org/ntsb-findings/03034025/cases.md?model=2072306), [All aircraft, 113 cases](https://openairdocs.org/ntsb-findings/03034025/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: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Cessna 170B, 9 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=2072306), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) ## Analysis The pilot reported that at the conclusion of a Title 14, CFR Part 91 personal flight, he landed his tailwheel airplane on a hard-surfaced runway. During the landing roll, he said he lost directional control, and the airplane ground-looped to the right, damaging the left wing, left aileron, and left elevator. The pilot indicated the wind was 5 to 8 knots and variable in direction. He noted that had he been more aware of its variable direction, he would have slowed his taxi speed and anticipated a possible wind shift. He said there were no preaccident mechanical problems with the airplane. ## Factual narrative The pilot reported that at the conclusion of a Title 14, CFR Part 91 personal flight, he landed his tailwheel airplane on a hard-surfaced runway. During the landing roll, he said he lost directional control, and the airplane ground-looped to the right, damaging the left wing, left aileron, and left elevator. The pilot indicated the wind was 5 to 8 knots and variable in direction. He noted that had he been more aware of its variable direction, he would have slowed his taxi speed and anticipated a possible wind shift. He said there were no preaccident mechanical problems with the airplane. ## Aircraft - Registration: [N2886C](https://openairdocs.org/aircraft/N2886C), registered now, S/N 26429, built 1954 (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: 26429 - Engines: Lycoming O-360 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Harold Parker - Registered owner: Harold Parker - Airworthiness certificate: Standard, Normal - Departed: Wasilla, AK - Destination: Chugiak, AK - Flight plan: Unknown - Airport: 4AK6, Wolf Lake, runway 36 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: none; private; airplane ratings: single-engine land; medical: class 3; seat: left; flight hours: 695 total, 16 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 8 knots ## 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 20100611035469A](https://openairdocs.org/incident/20100611035469A), Jun 11, 2010: Cessna 170B, Wasilla, AK, Substantial damage. After landing at Wolf Lake the pilot taxied to the end of runway 36 for an 18 departure. When the pilot reached the end of the runway, a wind gust pushed the… ## Other investigations on N2886C (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 SEA06CA078](https://openairdocs.org/ntsb/SEA06CA078), Apr 18, 2006: Cessna 170B (N2886C), Shelton, WA, substantial damage. Probable cause: The main landing gear wheel failure during the takeoff ground roll. A related factor was directional control of the aircraft was not possible after the wheel failure. ## Docket (1 files) The files NTSB released with the investigation on September 16, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76350. 1.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40335959&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.