Thursday, February 18, 2021

Loss of Control on Ground: Cessna 182A Skylane, N969KM; accident occurred February 18, 2020 in Koyuk, Alaska

Aviation Accident Final Report - National Transportation Safety Board

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; Fairbanks, Alaska

Investigation Docket - National Transportation Safety Board:

SK Aircraft LLC

Location: Koyuk, Alaska
Accident Number: ANC20CA022
Date & Time: February 19, 2020, 
Registration: N969KM
Aircraft: Cessna 182
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General aviation - Personal


The pilot of the ski-equipped airplane reported that during the landing on snow covered sea ice, the airplane ground looped and the left landing gear collapsed. The left wing and fuselage sustained
substantial damage.

The pilot added that there was an overcast cloud ceiling with light snow showers at the time of the accident, and that he attempted the landing in "flat light" conditions on "flat terrain."

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain directional control during a landing in flat light conditions, which resulted in a ground loop.


Environmental issues Flat light - Effect on operation
Personnel issues Aircraft control - Pilot

Factual Information

History of Flight

Landing-landing roll Loss of control on ground (Defining event)
Landing-landing roll Collision with terr/obj (non-CFIT)
Landing-flare/touchdown Landing gear collapse

Pilot Information

Certificate: Private 
Age: 54,Male
Airplane Rating(s): Single-engine land; Single-engine sea
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 4-point
Instrument Rating(s): None
Second Pilot Present: Yes
Instructor Rating(s): None 
Toxicology Performed: Yes
Medical Certification: Class 3 With waivers/limitations
Last FAA Medical Exam: January 30, 2020
Occupational Pilot: No 
Last Flight Review or Equivalent:
Flight Time: 3850 hours (Total, all aircraft), 2500 hours (Total, this make and model) 

Aircraft and Owner/Operator Information

Aircraft Make: Cessna 
Registration: N969KM
Model/Series: 182 A 
Aircraft Category: Airplane
Year of Manufacture: 1958 
Amateur Built: No
Airworthiness Certificate: Normal 
Serial Number: 51506
Landing Gear Type: Tailwheel; Ski/wheel 
Date/Type of Last Inspection: 
Certified Max Gross Wt.: 2348 lbs
Time Since Last Inspection: 
Engines: 1 Reciprocating
Airframe Total Time: 
Engine Manufacturer: Continental
Engine Model/Series: O-470
Registered Owner: 
Rated Power:
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC) 
Condition of Light: Day
Observation Facility, Elevation: PAKK,110 ft msl 
Distance from Accident Site: 16 Nautical Miles
Observation Time: 23:56 Local 
Direction from Accident Site: 46°
Lowest Cloud Condition: Scattered / 1300 ft AGL
Visibility 2.5 miles
Lowest Ceiling: Overcast / 2400 ft AGL
Visibility (RVR):
Wind Speed/Gusts: 5 knots / 
Turbulence Type Forecast/Actual:  /
Wind Direction: 320° 
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 29.27 inches Hg 
Temperature/Dew Point: -11°C / -13°C
Precipitation and Obscuration: N/A - None - Mist
Departure Point: Koyuk, AK (PAKK)
Type of Flight Plan Filed: None
Destination: Nome, AK (94Z ) 
Type of Clearance: None
Departure Time:
Type of Airspace: Class G


Runway Surface Type:
Airport Elevation: 
Runway Surface Condition: Ice; Snow
Runway Used: 
IFR Approach: None
Runway Length/Width:
VFR Approach/Landing: Full stop

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None 
Aircraft Fire: None
Ground Injuries: N/A 
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 64.751663,-161.601104(est)

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