# NTSB ANC12CA027: Cessna U206G, N756CL, Naknek, AK, March 9, 2012 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: March 9, 2012, 18:50 local (22:50 UTC) - Place: Naknek, AK - Coordinates: 58.778331, -156.942214 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=58.7783&lon=-156.9422&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report June 28, 2012 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: FAA Anchorage FSDO - NTSB case key (mKey): 83150 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC12CA027 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/83150/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=83150 - Page: https://openairdocs.org/ntsb/ANC12CA027 ## Probable cause The pilot's decision to take off from an unsuitable off-airport site. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna U206G, 15 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2073356), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Runway/land/takeoff/taxi surface: snow/slush/ice covered surface](https://openairdocs.org/ntsb-findings/03023015): Environmental issues › Physical environment · Effect on equipment; cases with it: [Cessna U206G, 4 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md?model=2073356), [All aircraft, 219 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) (defining event); cases with it: [Cessna U206G, 7 cases](https://openairdocs.org/ntsb-events/490/sequence.md?model=2073356), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The pilot was attempting to take off from a frozen, snow-covered pond that had just been plowed. During the takeoff roll, the airplane's left main gear hit a snow berm, and the airplane turned abruptly left. The right wing contacted terrain and sustained substantial damage. The pilot stated that there were no preaccident mechanical anomalies with the airplane. ## Factual narrative The pilot was attempting a takeoff from a frozen, snow-covered pond that had just been plowed. During the takeoff roll, the airplane's left main gear hit a snow berm, and the airplane turned abruptly left. The right wing contacted terrain, and sustained substantial damage. The pilot stated there were no preaccident mechanical anomalies with the airplane. ## Aircraft - Registration: [N756CL](https://openairdocs.org/aircraft/N756CL), registered now, S/N U20603983, built 1977 (OpenAirDocs) - Reported make and model: CESSNA U206G - Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: U20603983 - Airframe hours: 8614 - Engines: CONT MOTOR IO 520 SERIES 285 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Operator: Egli Air Haul Inc. - Registered owner: Egli Sam - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 29, 2011, 22 hours before - Departed: Naknek, AK - Destination: PAKN, King Salmon, AK - Flight plan: Company VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 41; injuries: none; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review May 3, 2011; seat: left; flight hours: 3,450 total, 1,783 in this make and model, 30 in the last 90 days, 10 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: 2,100 ft broken - Temperature: 18 °F, dew point 10 °F - Altimeter: 29.56 inHg - Observed at: PAKN, 11 nm away ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20120309006509A](https://openairdocs.org/incident/20120309006509A), Mar 9, 2012: Cessna U206G, Naknek, AK, Substantial damage. During takeoff, the pilot allowed left landing gear to contact snow berm, causing the airplane to turn sharply to the left, striking the left wing on the… - [Incident 20120309007509I](https://openairdocs.org/incident/20120309007509I), Mar 9, 2012: Cessna U206G, Naknek, AK, No damage. The PIC allowed engine failure due to fuel depletion in the selected tank before switching to a full tank. Unable to restart the engine after switching tanks,… ## Other investigations on N756CL (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 ANC24LA045](https://openairdocs.org/ntsb/ANC24LA045), Jun 7, 2024: Cessna 206 (N756CL), King Salmon, AK, substantial damage. Probable cause: A partial loss of engine power due to detonation/preignition of the No. 1 cylinder for reasons that could not be determined. ## Docket (1 files) The files NTSB released with the investigation on May 22, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=83150. 2.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 2.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40367716&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.