Friday, December 04, 2020

Loss of Control on Ground: Cessna 207A, N9728M; Accident occurred December 09, 2019 at Kwigillingok Airport (PAGG), Alaska

Aviation Accident Final Report - National Transportation Safety Board

Investigation Docket - National Transportation Safety Board:

Grant Aviation Inc

Location: Kwigillingok, Alaska 
Accident Number: ANC20CA037
Date & Time: December 9, 2019
Registration: N9728M
Aircraft: Cessna 207
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 None
Flight Conducted Under: Part 135: Air taxi & commuter - Scheduled


The pilot reported that he was departing from an ice-covered runway with a strong crosswind. After lining up on the runway, he added power and felt the airplane slide right. To correct, he applied left rudder and left brake to no avail. He reduced the engine power to idle and again applied left rudder and left brake, but the airplane continued to slide. He subsequently pulled the mixture to idle cutoff. The airplane slid off the runway and impacted a ditch, which resulted in substantial damage to the right wing. 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 improper decision to depart from an ice-covered runway with a strong crosswind, which resulted in a loss of directional control, runway excursion, and impact with a ditch.


Personnel issues
Decision making/judgment - Pilot

Personnel issues 
Aircraft control - Pilot

Directional control - Not attained/maintained

Environmental issues 
Snow/slush/ice covered surface - Effect on operation

Environmental issues 
Snow/slush/ice covered surface - Decision related to condition

Environmental issues
Crosswind - Effect on operation

Factual Information

History of Flight


Loss of control on ground (Defining event)

Attempted remediation/recovery

Collision with terr/obj (non-CFIT)

Pilot Information

Certificate: Commercial
Age: 39,Male
Airplane Rating(s): Single-engine land; Multi-engine land
Seat Occupied: Left
Other Aircraft Rating(s): None 
Restraint Used: 3-point
Instrument Rating(s): Airplane 
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 Without waivers/limitations
Last FAA Medical Exam: November 26, 2019
Occupational Pilot: Yes 
Last Flight Review or Equivalent: May 14, 2019
Flight Time: 1491.8 hours (Total, all aircraft), 516.7 hours (Total, this make and model), 121.6 hours (Last 90 days, all aircraft), 22 hours (Last 30 days, all aircraft), 2.7 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Cessna 
Registration: N9728M
Model/Series: 207 A 
Aircraft Category: Airplane
Year of Manufacture: 1981
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 20700721
Landing Gear Type: Tricycle
Date/Type of Last Inspection: November 4, 2019 AAIP
Certified Max Gross Wt.: 3803 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 29228.2 Hrs as of last inspection
Engine Manufacturer: Continental
ELT: C126 installed, not activated
Engine Model/Series: IO-520-F
Registered Owner:
Rated Power: 285 Horsepower
Operating Certificate(s) Held: Commuter air carrier (135)

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation:
Distance from Accident Site:
Observation Time: 00:56 Local 
Direction from Accident Site:
Lowest Cloud Condition: Clear
Visibility 10 miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 32 knots / 37 knots
Turbulence Type Forecast/Actual: /
Wind Direction: 110° Turbulence Severity
Forecast/Actual: /
Altimeter Setting: 28.42 inches Hg
Temperature/Dew Point: 2°C / 0°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Kwigillingok, AK (GGV) 
Type of Flight Plan Filed: Company VFR
Destination: Bethel, AK (BET)
Type of Clearance: None
Departure Time: 
Type of Airspace: Class G

Airport Information

Airport: Kwigillingok GGV
Runway Surface Type: Dirt
Airport Elevation: 21 ft msl
Runway Surface Condition: Ice
Runway Used: 15
IFR Approach: None
Runway Length/Width: 1835 ft / 40 ft
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 1 None 
Aircraft Damage: Substantial
Passenger Injuries:
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None 
Latitude, Longitude: 59.881668,-163.168884(est)

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