Sunday, March 24, 2019

Bearhawk, N152GH: Accident occurred September 09, 2018 at Williams Gliderport (CN12), Colusa County, California

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Sacramento, California

Aviation Accident Final Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Aviation Accident Data Summary - National Transportation Safety Board:

Location: Williams, CA

Accident Number: GAA18CA555
Date & Time: 09/09/2018, 1130 PDT
Registration: N152GH
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal 


The pilot of the tailwheel-equipped airplane reported that, during the landing roll in the grass left of an asphalt runway with light wind conditions, the airplane veered left. He attempted to recover, but his flight control input was ineffective. The airplane ground looped to the left, the right landing gear collapsed, and the right wing impacted a ditch.

The airplane sustained 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 failure to maintain directional control during the landing roll. 


Directional control - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Pilot (Cause)

Factual Information

History of Flight

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

 Pilot Information

Certificate: Airline Transport; Flight Instructor; Commercial
Age: 65, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Left
Other Aircraft Rating(s): Glider
Restraint Used: 4-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane Multi-engine; Airplane Single-engine; Glider
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 05/08/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 03/13/2018
Flight Time:  (Estimated) 22600 hours (Total, all aircraft), 13 hours (Total, this make and model), 20000 hours (Pilot In Command, all aircraft), 30 hours (Last 90 days, all aircraft), 10 hours (Last 30 days, all aircraft) 

Aircraft and Owner/Operator Information

Registration: N152GH
Model/Series: BEARHAWK
Aircraft Category: Airplane
Year of Manufacture: 2012
Amateur Built: Yes
Airworthiness Certificate: Experimental
Serial Number: 052-99/100-867
Landing Gear Type: Tailwheel
Seats: 4
Date/Type of Last Inspection: 11/29/2017, Annual
Certified Max Gross Wt.: 2700 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 450.5 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: C126 installed, not activated
Engine Model/Series: YIO-540-D4A5
Registered Owner: On file
Rated Power: 260 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KMYV, 62 ft msl
Distance from Accident Site: 27 Nautical Miles
Observation Time: 1853 UTC
Direction from Accident Site: 98°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 4 knots /
Turbulence Type Forecast/Actual: None / None
Wind Direction: Variable
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.87 inches Hg
Temperature/Dew Point: 29°C / 11°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Williams, CA (CN12)
Type of Flight Plan Filed:  None
Destination: Williams, CA (CN12)
Type of Clearance: VFR
Departure Time: 1015 PDT
Type of Airspace: Class G

Airport Information

Airport: WILLIAMS (CN12)
Runway Surface Type: Grass/turf
Airport Elevation: 68 ft
Runway Surface Condition: Dry; Holes; Rough
Runway Used: 16
IFR Approach: None
Runway Length/Width: 2500 ft / 40 ft
VFR Approach/Landing: Full Stop

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude:  39.164444, -122.131667 (est)

1 comment:

  1. Flying with the wrong tailwheel will do that to you.