# NTSB ANC95LA032: Cessna 185F, N6166N, Port Alsworth, AK, March 4, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: March 4, 1995, 13:00 local (17:00 UTC) - Place: Port Alsworth, AK - Coordinates: 60.200786, -154.279724 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=60.2008&lon=-154.2797&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report September 24, 1995 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 2629 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC95LA032 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2629/pdf - Page: https://openairdocs.org/ntsb/ANC95LA032 ## Probable cause THE PILOT'S INADVERTENT ACTIVATION OF THE RIGHT BRAKE PEDAL DURING THE LANDING ROLL. ## Analysis THE PILOT, FLYING FROM THE RIGHT SEAT, WAS LANDING ON A REMOTE AIRSTRIP WITH TWO PASSENGERS ON A PERSONAL CROSS-COUNTRY FLIGHT. AFTER TOUCHDOWN IN CALM WIND CONDITIONS, THE PILOT REPORTED THAT SHE INADVERTENTLY DEPRESSED THE RIGHT BRAKE PEDAL AS A RESULT OF WEARING LARGE BOOTS. THE AIRPLANE VEERED TO THE RIGHT AND STRUCK A SNOW BERM ALONG THE RIGHT SIDE OF THE AIRSTRIP. THE AIRPLANE RECEIVED DAMAGE TO THE LEFT GEAR, LEFT WING, AND LEFT STABILIZER. ## Factual narrative On March 4, 1995, about 1300 Alaska standard time, a wheel equipped Cessna 185F, N6166N, sustained substantial damage when it crashed during landing at a private airstrip at Port Alsworth, Alaska. The airplane was being operated as a visual flight rules (VFR) cross- country personal flight when the accident occurred. The certificated private pilot (the first pilot), seated in the right front seat, the owner (the second pilot), seated in the left front seat, and one additional passenger were not injured. Visual meteorological conditions prevailed and a VFR flight plan was filed. The flight originated from a frozen lake about 20 miles west of Iliamna, Alaska, at 1230 as a continuing portion of the flight. The owner reported that after touchdown, the first pilot who was performing the landing, inadvertently depressed the right brake pedal as the result of wearing large boots. The airplane swerved to the right and struck a berm on the right edge of the runway. The airplane received damage to the left landing gear, left wing, left horizontal stabilizer and elevator. The owner indicated that the wind conditions were calm. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - brakes(normal) - inadvertent activation, pilot in command (cause) - On ground/water encounter with terrain/water, landing - roll - terrain condition - snowbank ## Aircraft - Registration: [N6166N](https://openairdocs.org/aircraft/N6166N), registered now, S/N 18504302, built 1981 (OpenAirDocs) - Reported make and model: CESSNA 185F - Registry model: [Cessna A185F](https://openairdocs.org/model/cessna-a185f) (registry code 2072821) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18504302 - Airframe hours: 2608 - Engines: CONTINENTAL IO-520 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Larry Nauta - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 13, 1995, 10 hours before - Departed: ILIAMNA, AK - Flight plan: VFR - Airport: Port Alsworth ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 46; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: right; flight hours: 145 total, 20 in this make and model, 2 in the last 90 days, 1 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 50 statute miles - Lowest ceiling: none - Temperature: 34 °F ## 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 19950304003099A](https://openairdocs.org/incident/19950304003099A), Mar 4, 1995: Cessna A185F, Port Alsworth, AK, Substantial damage. Pilot wearing large boots caused in advertent right brake and swerve on landing roll. Struck berm on runway edge. ## Other investigations on N6166N (2) 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 ANC91LA108](https://openairdocs.org/ntsb/ANC91LA108), Jul 23, 1991: Cessna 185 (N6166N), Clarks Point, AK, substantial damage. Probable cause: THE LOSS OF DIRECTIONAL CONTROL ON THE GROUND CAUSED BY THE FAILURE OF THE LEFT BRAKE DISC. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT-IN-COMMAND'S INTENTIONAL GROUND LOOP OF THE AIRPLANE. - [NTSB SEA89LA062](https://openairdocs.org/ntsb/SEA89LA062), Mar 26, 1989: Cessna 185 (N6166N), Everett, WA, substantial damage. Probable cause: THE FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL OF THE TAILWHEEL AIRCRAFT DURING LANDING ROLL. 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.