Wednesday, July 22, 2020

Loss of Control on Ground: Cessna 180, N2943C; accident occurred July 21, 2020 at Cambridge Municipal Airport (KCBG), Isanti County, Minnesota

Front of accident airplane.

Damage – wing root.

Damaged tail section.

Aviation Accident Final Report - National Transportation Safety Board

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Minneapolis, Minnesota

Investigation Docket - National Transportation Safety Board:

Location: Cambridge, MN
Accident Number: CEN20CA298
Date & Time: 07/21/2020, 1620 CDT
Registration: N2943C
Aircraft: Cessna 180
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Instructional


The pilot and flight instructor conducted an instructional flight in a single-engine tailwheel airplane. The pilot had recently purchased the airplane and needed a tailwheel endorsement. After some ground instruction, they performed taxi and high-speed taxi operations in the airplane. They then flew to another airport, where they performed six take-off and landings to a full stop on a grass runway. En route back to their original airport, they stopped at another airport which had a grass runway and performed another seven takeoffs and landings. They then returned to the original airport, where the pilot completed a landing and takeoff from an asphalt runway. During the final landing to runway 34, the airplane bounced, and bounced a second time, before the airplane ground looped. The airplane came to rest inverted beside the runway, and substantial damage was noted to the airplane's empennage and wing. A review of the weather conditions about the time of the accident noted wind at 220 deg; at 5 kts. Using runway 34, the airplane would have experienced a slight quartering tailwind condition during landing.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's loss of directional control while landing a tailwheel airplane with a slight left quartering a tailwind. Contributing to the accident was the flight instructor's delayed remedial action.


Aircraft Directional control - Not attained/maintained
Personnel issues Aircraft control - Pilot
Personnel issues Aircraft control - Instructor/check pilot
Personnel issues Delayed action - Instructor/check pilot

Factual Information

History of Flight

Landing-flare/touchdown Loss of control on ground (Defining event)

Pilot Information

Certificate: Private
Age: 48
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 Without Waivers/Limitations
Last FAA Medical Exam: 05/14/2019
Occupational Pilot: No
Last Flight Review or Equivalent: 06/24/2020
Flight Time: 529 hours (Total, all aircraft), 17.3 hours (Total, this make and model), 480 hours (Pilot In Command, all aircraft), 72 hours (Last 90 days, all aircraft), 13 hours (Last 30 days, all aircraft), 2.3 hours (Last 24 hours, all aircraft)

Flight Instructor Information

Certificate: Flight Instructor; Commercial
Age: 70
Airplane Rating(s): Single-engine Land; Single-engine Sea
Seat Occupied: Right
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): Airplane Single-engine
Toxicology Performed: No
Medical Certification: Class 3 Without Waivers/Limitations
Last FAA Medical Exam: 07/31/2019
Occupational Pilot:No
Last Flight Review or Equivalent: 07/07/2020
Flight Time: 6200 hours (Total, all aircraft), 45 hours (Total, this make and model), 5933 hours (Pilot In Command, all aircraft), 70 hours (Last 90 days, all aircraft), 46 hours (Last 30 days, all aircraft), 2 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Cessna
Registration: N2943C
Model/Series: 180 Undesignated
Aircraft Category: Airplane
Year of Manufacture: 1954
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 30843
Landing Gear Type: Tailwheel
Date/Type of Last Inspection: 10/01/2019, Annual
Certified Max Gross Wt.:
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 3800 Hours as of last inspection
Engine Manufacturer: Continental
ELT: Installed, not activated
Engine Model/Series: O-470 SERIES
Registered Owner: On file
Rated Power:
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: KCBG
Distance from Accident Site:
Observation Time: 1555 CDT
Direction from Accident Site:
Lowest Cloud Condition: Scattered / 3300 ft agl
Visibility: 10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 5 knots /
Turbulence Type Forecast/Actual:
Wind Direction: 220°
Turbulence Severity Forecast/Actual:
Altimeter Setting: 29.86 inches Hg
Temperature/Dew Point: 26°C / 18°C
Precipitation and Obscuration: No Obscuration
Departure Point: Cambridge, MN (CBG)
Type of Flight Plan Filed: None
Destination: Cambridge, MN (CBG)
Type of Clearance: None
Departure Time: CDT
Type of Airspace:

Airport Information

Airport: Cambridge Municipal (CBG)
Runway Surface Type: Asphalt
Airport Elevation: 945 ft
Runway Surface Condition: Dry
Runway Used: 34
IFR Approach: None
Runway Length/Width: 4001 ft / 75 ft
VFR Approach/Landing: Traffic Pattern

Wreckage and Impact Information

Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 45.558056, -93.264444 (est)

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