Saturday, June 08, 2019

Loss of Control on Ground: American Champion 7GCBC Citabria, N57477, accident occurred August 01, 2018 at Big Creek Airport (U60), Shoshone County, Idaho

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

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Boise, Idaho

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: Big Creek, ID
Accident Number: WPR18LA216
Date & Time: 08/01/2018, 1215 MDT
Registration: N57477
Aircraft: Champion 7GCBC
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal 

On August 1, 2018, about 1215 mountain daylight time, a Champion 7GCBC, N57477, veered off the runway and collided with a fence during the landing roll at the Big Creek Airport (U60), Big Creek, Idaho. The airline transport pilot and passenger were not injured. The airplane sustained substantial damage to the right wing struts. The airplane was owned and operated by the pilot under the provisions of Title 14 Code of Federal Regulation Part 91. Visual meteorological conditions prevailed, and no flight plan was filed. The personal cross-country flight originated from Flying B Ranch, Cascade, Idaho at 1136 with a planned destination of Big Creek, Idaho.

The pilot stated that after making a normal landing on runway 19, he applied wheel brakes. The airplane immediately turned to the left, and despite application of brakes and right rudder, the airplane veered off the left side of the runway. The airplane continued over a water sprinkler system, through a wood fence and came to rest in a stand of small trees. The pilot stated that he had never before had to brake as aggressively with this airplane.

The pilot believed the brakes were malfunctioning by not applying equal brake pressure to the two brake calipers. He stated he was applying equal force to both brakes when the airplane veered left. The left brake line was breached during the accident sequence. A Federal Aviation Administration (FAA)inspector from the Boise, Idaho Flight Standards District Office monitored the replacement of the left brake line, then tested the left brake afterwards. He reported the left brake functioned normally. A visual inspection of the left brake puck revealed normal conditions. There were no indications of brake anomalies present. The airplane was loaded onto a trailer at the time of the examination therefore, no other tests of the brakes could be applied. After the airplane was removed from the trailer, the owner, with the authorization of the IIC, checked both brakes and reported normal operation. A video of the accident sequence, as viewed from inside, shows the airplane landing, veering left and coming to a stop in the stand of small trees.

A witness stated that he observed the airplane make a normal landing remaining aligned with the runway centerline. He momentarily diverted his eyes and when he looked back, he noted the airplane was established in a gradual left turn, maneuvering at a slow speed in a 3-point attitude. The airplane then collided into an airport perimeter fence and came to rest about 600 ft past the touchdown point.

The Champion airplane was manufactured in 1993. The tandem seat, tail dragger design was equipped with provisions for flight controls in the rear seat including rudder pedals. Brake pressure can be applied from either seat.

Big Creek Airfield is an uncontrolled, public use airport. The dirt runway, 01/19, is 3,550 ft long and 110 ft wide. When landing to runway 19, there is an uphill angle of .3. Runway 19 is the recommended landing runway. The runway surface was examined and found to be in good condition with no holes or defects. 

Pilot Information

Certificate: Airline Transport
Age: 67, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Front
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 3 None
Last FAA Medical Exam: 05/03/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 
Flight Time:   (Estimated) 4688 hours (Total, all aircraft), 1403 hours (Total, this make and model), 2452 hours (Pilot In Command, all aircraft), 8.4 hours (Last 90 days, all aircraft), 2.8 hours (Last 30 days, all aircraft), 2.5 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: Champion
Registration: N57477
Model/Series: 7GCBC No Series
Aircraft Category: Airplane
Year of Manufacture: 1973
Amateur Built: No
Airworthiness Certificate: Utility
Serial Number: 517-73
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 01/05/2018, Annual
Certified Max Gross Wt.: 1650 lbs
Time Since Last Inspection: 8 Hours
Engines: 1 Reciprocating
Airframe Total Time: 1898 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: Installed, not activated
Engine Model/Series: O-320-A2B
Registered Owner: On file
Rated Power: 150 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: U60, 5024 ft msl
Distance from Accident Site: 41 Nautical Miles
Observation Time: 1851 UTC
Direction from Accident Site: 66°
Lowest Cloud Condition: Clear
Visibility:  8 Miles
Lowest Ceiling: None
Visibility (RVR): 
Wind Speed/Gusts: Calm /
Turbulence Type Forecast/Actual: None / None
Wind Direction:
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 30.09 inches Hg
Temperature/Dew Point: 28°C / 8°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Cascade, ID (N/A)
Type of Flight Plan Filed:
Destination: Big Creek, ID (U60)
Type of Clearance: None
Departure Time: 1210 MDT
Type of Airspace: Class G 

Airport Information

Airport: Big Creek (U60)
Runway Surface Type: Grass/turf
Airport Elevation: 5743 ft
Runway Surface Condition: Dry
Runway Used: 19
IFR Approach: None
Runway Length/Width: 3550 ft / 110 ft
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: 45.131944, -115.321111 (est)

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