# NTSB ANC13CA046: Cessna U206G, N756DJ, Nenana, AK, April 24, 2013 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: April 23, 2013, 16:00 local (Apr 24, 2013, 00:00 UTC) - Place: Nenana, AK - Coordinates: 64.107223, -147.974166 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=64.1072&lon=-147.9742&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report August 13, 2013 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: Federal Aviation Administration - NTSB case key (mKey): 86907 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC13CA046 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/86907/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=86907 - Page: https://openairdocs.org/ntsb/ANC13CA046 ## Probable cause Ice accretion in the right main landing gear wheel brake during departure, which prevented the right main landing gear from rotating on landing and resulted in a runway excursion and subsequent impact with a snow bank. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Runway/land/takeoff/taxi surface: snow/slush/ice covered surface](https://openairdocs.org/ntsb-findings/03023015): Environmental issues › Physical environment · Contributed to outcome; 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) - [Landing gear system: landing gear brakes system](https://openairdocs.org/ntsb-findings/01023240): Aircraft › Aircraft systems · Damaged/degraded (probable cause); cases with it: [Cessna U206G, 1 case](https://openairdocs.org/ntsb-findings/01023240/cases.md?model=2073356), [All aircraft, 92 cases](https://openairdocs.org/ntsb-findings/01023240/cases.md) - [Aircraft capability: braking capability](https://openairdocs.org/ntsb-findings/01061050): Aircraft › Aircraft oper/perf/capability · Attain/maintain not possible (probable cause); cases with it: [Cessna U206G, 1 case](https://openairdocs.org/ntsb-findings/01061050/cases.md?model=2073356), [All aircraft, 57 cases](https://openairdocs.org/ntsb-findings/01061050/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) (defining event); cases with it: [Cessna U206G, 1 case](https://openairdocs.org/ntsb-events/330/sequence.md?model=2073356), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Cessna U206G, 9 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=2073356), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna U206G, 16 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2073356), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that he taxied through loose snow and slush at the departure airport. The subsequent flight and landing took place in sub-freezing temperatures. On touchdown at the destination airport, the airplane veered to the right. The pilot applied left rudder to correct for the veer, but the airplane veered more sharply to the right, nosed down, and impacted a snow berm. The airplane sustained substantial damage to the left wing. Postaccident examination revealed that the right brake was locked by ice while the left brake moved freely. Subsequent disassembly of the right brake revealed no mechanical anomalies. ## Factual narrative The pilot reported that he had taxied through loose snow and slush at the departure airport. The subsequent flight and landing were in sub-freezing temperatures. On touchdown at the destination airport, the airplane veered to the right. The pilot applied left rudder in an attempt to correct for the veer, the airplane then veered sharply to the right, nosed down, and impacted a snow berm. The airplane sustained substantial damage to the left wing. Postaccident examination by the pilot, found the right brake still locked by ice and the left brake free. He then disassembled the right brake, and no mechanical anomalies were found. ## Aircraft - Registration: [N756DJ](https://openairdocs.org/aircraft/N756DJ), registered now, S/N U20604005 (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: U20604005 - Airframe hours: 12508 - Engines: CONT MOTOR IO 520 SERIES 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Bik Air - Registered owner: Bik Air - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 19, 2013 - Departed: FAI, Fairbanks, AK - Destination: PVT, Nenana, AK - Flight plan: Company VFR - Airport: PVT, Wolf Pack Mine, runway 20, 3,000 × 100 ft, ice ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 70; injuries: none; commercial; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review August 17, 2012; seat: left; flight hours: 20,000 total, 6,000 in this make and model, 70 in the last 90 days, 30 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 21 °F, dew point 16 °F - Altimeter: 30.37 inHg - Observed at: PANN, 45 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 20130423007149A](https://openairdocs.org/incident/20130423007149A), Apr 23, 2013: Cessna U206G, Fairbanks, AK, Minor damage. Pilot taxied through snow and slush on taxi to runway before departure from fai. During flight the snow/ice froze and caused the right brake to lock up on… ## Other investigations on N756DJ (3) 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 WPR20CA232](https://openairdocs.org/ntsb/WPR20CA232), Jul 11, 2020: Cessna U206 (N756DJ), Nenana, AK, substantial damage. Probable cause: The pilot's failure to maintain directional control during a soft field takeoff on a dirt airstrip, which resulted in an impact with a vehicle. - [NTSB ANC01LA057](https://openairdocs.org/ntsb/ANC01LA057), May 15, 2001: Cessna 206 (N756DJ), Stebbins, AK, substantial damage. Probable cause: A jammed control yoke during landing, an entangled wiring harness, and inadequate maintenance by company personnel. A factor associated with the accident was the pilot's inability to flare the… - [NTSB ANC97LA088](https://openairdocs.org/ntsb/ANC97LA088), Jun 21, 1997: Cessna 206 (N756DJ), Prudhoe Bay, AK, substantial damage. Probable cause: The pilot's improper preflight inspection of the airplane and failure to properly secure the baggage door. ## Docket (1 files) The files NTSB released with the investigation on May 30, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=86907. 381 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 381 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40393357&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.