Friday, January 10, 2020

Wildlife Encounter (Non-Bird): Cessna 180J Skywagon, N76LG; accident occurred August 10, 2019 at Richard B Helgeson Airport (KTWM), Two Harbors, Lake County, Minnesota

View of damaged left wing.

View of damaged left horizontal stabilizer. 

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

Aviation Accident Factual Report - National Transportation Safety Board: 

Investigation Docket - National Transportation Safety Board:

Location: Two Harbors, MN
Accident Number: GAA19CA489
Date & Time: 08/10/2019, 1100 CDT
Registration: N76LG
Aircraft: Cessna 180
Aircraft Damage: Substantial
Defining Event: Wildlife encounter (non-bird)
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal 

The pilot reported that, during the landing roll on a grass strip runway, a deer ran across the runway. She "felt [the deer] was too close [to the airplane] to initiate a go-around "so she applied the brakes hard, and the airplane skidded right and ground looped.

The airplane sustained substantial damage to the left wing and horizontal stabilizer.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Pilot Information

Certificate: Commercial; Private
Age: 51, Female
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane Multi-engine
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 03/07/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent: 08/05/2019
Flight Time:  (Estimated) 2178 hours (Total, all aircraft), 855 hours (Total, this make and model), 1923 hours (Pilot In Command, all aircraft), 55 hours (Last 90 days, all aircraft), 20 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Cessna
Registration: N76LG
Model/Series: 180 J
Aircraft Category: Airplane
Year of Manufacture: 1976
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 18052674
Landing Gear Type: Tailwheel
Seats: 4
Date/Type of Last Inspection: 04/03/2019, Annual
Certified Max Gross Wt.: 2800 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 4250 Hours at time of accident
Engine Manufacturer: Continental
ELT: C126 installed, not activated
Engine Model/Series: O-470 SERIES
Registered Owner: On file
Rated Power: 230 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: KTWM, 1080 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1556 UTC
Direction from Accident Site: 131°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 5 knots /
Turbulence Type Forecast/Actual: None / None
Wind Direction: 220°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.99 inches Hg
Temperature/Dew Point: 24°C / 14°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Superior, WI (SUW)
Type of Flight Plan Filed: None
Destination: Two Harbors, MN (TWM)
Type of Clearance: None
Departure Time: 1000 CDT
Type of Airspace: Class E

Airport Information

Airport: Richard B Helgeson (TWM)
Runway Surface Type: Asphalt
Airport Elevation: 1073 ft
Runway Surface Condition: Dry
Runway Used: 33
IFR Approach: None
Runway Length/Width: 2581 ft / 150 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:  47.049167, -91.745278 (est)

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