Saturday, June 15, 2019

Loss of control on ground: Piper PA-20, N11YB, accident occurred June 16, 2018 at Orcas Island Airport (KORS), Eastsound, San Juan County, Washington

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Des Moines, Washington

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: East Sound, WA
Accident Number: GAA18CA441
Date & Time: 06/16/2018, 1730 PDT
Registration: N11YB
Aircraft: Piper PA
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 a left wing low (sideslip) landing and prior to touchdown, he leveled the wings, and the airplane bounced. He then increased the throttle slightly, adjusted the pitch to cushion the subsequent bounce but the airplane veered right, exited the runway to the right, and ground looped.

The airplane sustained substantial damage to the left wing.

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

The automated weather observation station located on the airport reported that 5 minutes after the accident, the wind was from 310° at 6 knots, gusting 12 knots. The airplane landed on runway 34.

Pilot Information

Certificate: Private
Age: 59, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 4-point
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: 06/14/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 12/04/2016
Flight Time:  (Estimated) 255 hours (Total, all aircraft), 221 hours (Total, this make and model), 166 hours (Pilot In Command, all aircraft), 8 hours (Last 90 days, all aircraft), 6 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: Piper
Registration: N11YB
Model/Series: PA 20
Aircraft Category: Airplane
Year of Manufacture: 1950
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 20-83
Landing Gear Type: Tailwheel
Seats: 4
Date/Type of Last Inspection: 07/13/2017, Annual
Certified Max Gross Wt.: 1799 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 2191 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: Installed, not activated
Engine Model/Series: O-320
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: KORS, 31 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 0035 UTC
Direction from Accident Site: 221°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 6 knots / 12 knots
Turbulence Type Forecast/Actual: None / None
Wind Direction: 310°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.93 inches Hg
Temperature/Dew Point: 22°C / 10°C
Precipitation and Obscuration:  No Obscuration; No Precipitation
Departure Point: East Sound, WA (ORS)
Type of Flight Plan Filed: None
Destination: Eastsound, WA (ORS)
Type of Clearance: None
Departure Time: 1715 PDT
Type of Airspace: Class G

Airport Information

Runway Surface Type: Asphalt
Airport Elevation: 34 ft
Runway Surface Condition: Dry
Runway Used: 34
IFR Approach: None
Runway Length/Width: 2901 ft / 60 ft
VFR Approach/Landing: Full Stop; Straight-in

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: 48.708333, -122.910556 (est)

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