Tuesday, July 02, 2019

Loss of Control on Ground; Cessna 170B, N4569C; accident occurred August 25, 2018 at Prineville Airport (S39), Crook County, Oregon

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Portland, Oregon

Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Investigation Docket - National Transportation Safety Board:  https://dms.ntsb.gov/pubdms


Location: Prineville, OR
Accident Number: GAA18CA509
Date & Time: 08/25/2018, 1220 PDT
Registration: N4569C
Aircraft: Cessna 170
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal

The pilot of the tailwheel-equipped airplane reported that during the landing roll about 40 knots ground speed, the airplane drifted to the left and he corrected back to the center. However, the airplane drifted to the right and he was unable to correct back to center. The airplane ground looped to the right, and the left wing struck the ground before the airplane came to a stop.

The airplane sustained substantial damage to forward lower fuselage bulkhead and the left wing.

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

Pilot Information

Certificate: Private
Age: 45, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: Lap Only
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 01/17/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 07/11/2017
Flight Time: (Estimated) 145 hours (Total, all aircraft), 50 hours (Total, this make and model), 145 hours (Pilot In Command, all aircraft), 16 hours (Last 90 days, all aircraft), 7 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Cessna
Registration: N4569C
Model/Series:170 B 
Aircraft Category:Airplane 
Year of Manufacture:1963 
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 25423
Landing Gear Type: Tailwheel
Seats: 4
Date/Type of Last Inspection: 07/07/2018, Annual
Certified Max Gross Wt.: 2200 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 4137 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: Installed, not activated
Engine Model/Series: O-360-A1A
Registered Owner: On file
Rated Power: 180 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: KRDM, 3084 ft msl
Distance from Accident Site: 10 Nautical Miles
Observation Time: 1956 UTC
Direction from Accident Site:  259°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 4 knots /
Turbulence Type Forecast/Actual: /
Wind Direction: 300°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 30.03 inches Hg
Temperature/Dew Point: 22°C / 1°C

Precipitation and Obscuration: Moderate - Smoke; No Obscuration; No Precipitation
Departure Point: Madras, OR (S33)
Type of Flight Plan Filed: None
Destination: Prineville, OR (S39)
Type of Clearance: None
Departure Time: 1145 PDT
Type of Airspace: Class G

Airport Information

Airport: Prineville (S39)
Runway Surface Type: Asphalt; Gravel
Airport Elevation: 3251 ft
Runway Surface Condition: Dry
Runway Used: 33
IFR Approach: None
Runway Length/Width: 4054 ft / 40 ft
VFR Approach/Landing: Full Stop; 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:  44.287778, -120.905278 (est)

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