# NTSB ANC12CA115: Cessna 182A, N2028G, Port Lions, AK, October 1, 2012 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: September 30, 2012, 20:00 local (Oct 1, 2012, 04:00 UTC) - Place: Port Lions, AK - Coordinates: 57.65361, -152.937225 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=57.6536&lon=-152.9372&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Structural icing](https://openairdocs.org/ntsb-events/210) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report December 19, 2012 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: Federal Aviation Administration - NTSB case key (mKey): 85178 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC12CA115 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/85178/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=85178 - Page: https://openairdocs.org/ntsb/ANC12CA115 ## Probable cause The pilot's decision to take off with ice- and snow-contaminated wings. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna 182A, 7 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=2072704), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna 182A, 10 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2072704), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Temp/humidity/pressure: conducive to structural icing](https://openairdocs.org/ntsb-findings/03031025): Environmental issues › Conditions/weather/phenomena · Decision related to condition (probable cause); cases with it: [Cessna 182A, 1 case](https://openairdocs.org/ntsb-findings/03031025/cases.md?model=2072704), [All aircraft, 103 cases](https://openairdocs.org/ntsb-findings/03031025/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Structural icing](https://openairdocs.org/ntsb-events/210) (defining event); cases with it: [Cessna 182A, 1 case](https://openairdocs.org/ntsb-events/210/sequence.md?model=2072704), [All aircraft, 102 cases](https://openairdocs.org/ntsb-events/210/sequence.md) - [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna 182A, 34 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072704), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis Prior to departure, the commercial pilot attempted to remove ice and snow contamination from the wings of the float-equipped airplane, but some contamination remained. During the takeoff run, the airplane failed to become airborne before reaching the end of the lake. The airplane slid along a gravel spillway for several hundred feet before nosing over. The airplane sustained substantial damage to the wings, empennage, and fuselage. The pilot stated that there were no preaccident anomalies with the airplane that would have precluded normal operation. The pilot noted that the accident might have been avoided if he had removed all the frozen contamination from the wing or waited for above-freezing temperatures. ## Factual narrative Prior to departure the commercial pilot attempted to remove frozen contamination from the wings of the float equipped airplane, but some contamination remained. During the takeoff run, the airplane failed to become airborne before reaching the end of the lake. The airplane slid along a gravel spillway for several hundred feet, before nosing over. The airplane sustained substantial damage to the wings, empennage, and fuselage. The pilot stated there were no pre-accident anomalies with the airplane that would have precluded normal operation. In the pilot’s written statement to the National Transportation Safety Board he noted that the accident might have been avoided if he had removed all the frozen contamination from the wing, or waited for above freezing temperatures. ## Aircraft - Registration: [N2028G](https://openairdocs.org/deregistered/N2028G-2022-12-14), registration cancelled 2022-12-14, S/N 51328, built 1958 (OpenAirDocs) - Reported make and model: CESSNA 182A - Registry model: [Cessna 182A](https://openairdocs.org/model/cessna-182a) (registry code 2072704) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 51328 - Airframe hours: 2855 - Engines: CONT MOTOR O-470 SERIES 230 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Operator: Blakeslee Mark C - Registered owner: Blakeslee Mark C - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 27, 2012 - Departed: PVT, Port Lions, AK - Destination: 9Z3, Kodiak, AK - Airport: PVT, Shotgun Lake, runway 36, 2,400 × 500 ft, water ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; injuries: none; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review August 12, 2011; seat: left; flight hours: 1,725 total, 1,296 in this make and model, 1,617 as pilot in command, 3 in the last 90 days, 2 in the last 30 days ## Weather - Conditions: Visual (VMC), Dusk - Wind: 310° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 39 °F, dew point 30 °F - Altimeter: 30.07 inHg - Observed at: PADQ, 18 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 20120930023279A](https://openairdocs.org/incident/20120930023279A), Sep 30, 2012: Cessna 182A, Port Lions, AK, Substantial damage. Pilot attempted takeoff from shotgun lake. Aircraft could not produce enough air speed to lift off. Aircraft ran aground on floats and flipped over. ## Docket (1 files) The files NTSB released with the investigation on October 27, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=85178. 705 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 705 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40379643&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.