Thursday, November 25, 2021

Loss of Control on Ground: Aviat A-1 Husky, N6XC; accident occurred September 06, 2021 at Gunnison-Crested Butte Regional Airport (KGUC), Gunnison County, Colorado









Aviation Accident Final Report - National Transportation Safety Board 

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Denver, Colorado

Investigation Docket - National Transportation Safety Board:
Location: Gunnison, Colorado
Accident Number: CEN21LA403
Date and Time: September 6, 2021, 14:00 Local
Registration: N6XC
Aircraft: AVIAT AIRCRAFT INC A-1 
Aircraft Damage: Substantial
Defining Event: Loss of control on ground 
Injuries: 2 None
Flight Conducted Under: Part 91: General aviation - Personal

Analysis

The pilot reported that he landed with a quartering tailwind. When the tailwheel touched down, the wind pushed the tail to the right and the airplane ground looped. The airplane came to rest upright off the left side of the runway and sustained substantial damage to the right wing and fuselage. The pilot reported that there were no mechanical malfunctions or anomalies 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 of the airplane after landing with a quartering tailwind.

Findings

Aircraft Directional control - Not attained/maintained
Personnel issues Aircraft control - Pilot

Factual Information

History of Flight

Landing-landing roll Loss of control on ground (Defining event)
Landing-landing roll Runway excursion

Pilot Information

Certificate: Private  
Age: 36, Male
Airplane Rating(s): Single-engine land
Seat Occupied: Front
Other Aircraft Rating(s): None 
Restraint Used: 4-point
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed:
Medical Certification: Class 3 Without waivers/limitations
Last FAA Medical Exam: December 17, 2019
Occupational Pilot: No 
Last Flight Review or Equivalent: May 9, 2021
Flight Time: 318.5 hours (Total, all aircraft), 21.8 hours (Total, this make and model), 318.5 hours (Pilot In Command, all aircraft), 55.4 hours (Last 90 days, all aircraft), 42 hours (Last 30 days, all aircraft), 4.8 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: AVIAT AIRCRAFT INC 
Registration: N6XC
Model/Series: A-1
Aircraft Category: Airplane
Year of Manufacture: 1997 
Amateur Built:
Airworthiness Certificate: Normal 
Serial Number: 1383
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: February 15, 2021 Annual 
Certified Max Gross Wt.: 1800 lbs
Time Since Last Inspection: 
Engines: 1 Reciprocating
Airframe Total Time: 1257.4 Hrs as of last inspection
Engine Manufacturer: Lycoming
ELT: Installed, not activated
Engine Model/Series: O-360-A1P
Registered Owner:
Rated Power: 180 Horsepower
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: KGUC,7666 ft msl 
Distance from Accident Site: 0 Nautical Miles
Observation Time: 13:56 Local
Direction from Accident Site: 79°
Lowest Cloud Condition: Clear
Visibility: 10 miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 5 knots /
Turbulence Type Forecast/Actual:  /
Wind Direction: 
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 30.35 inches Hg 
Temperature/Dew Point: 26°C / -2°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Rustler Canyon, UT
Type of Flight Plan Filed: None
Destination: Gunnison, CO 
Type of Clearance: VFR
Departure Time: 12:15 Local 
Type of Airspace: Class E

Airport Information

Airport: GUNNISON-CRESTED BUTTE RGNL GUC
Runway Surface Type: Dirt; Grass/turf
Airport Elevation: 7679 ft msl
Runway Surface Condition: Dry
Runway Used: 17/35
IFR Approach: None
Runway Length/Width: 2981 ft / 150 ft 
VFR Approach/Landing: Traffic pattern

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: 38.528213,-106.93972 (est)

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