Sunday, June 16, 2019

Loss of Control on Ground: Cessna A185F Skywagon, N93039, accident occurred August 20, 2018 at McCall Municipal Airport (KMYL), Valley County, Idaho

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: McCall, ID
Accident Number: GAA18CA501
Date & Time: 08/20/2018, 1015 MDT
Registration: N93039
Aircraft: Cessna A185
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Air Drop 

According to the pilot in the tailwheel-equipped airplane, during a wheel-landing the airplane yawed left and he applied right rudder to counter the yaw. The tail descended to the runway and the left yaw increased. He countered the left yaw with a right brake application as well as the right rudder application. He recalled that the right brake application was "completely ineffective" and the airplane exited the left side of the runway. The airplane entered the rough gravel surface on the left side of the runway, and the pilot applied left rudder and left brake to intentionally ground-loop the airplane. The right wing struck the ground, and the airplane came to a stop.

The airplane sustained substantial damage to the right wing and aileron.

Post-accident examination of the airplane's brake system by Federal Aviation Administration Aviation Safety Inspectors revealed that the cotter pin and clevis that connects the right brake cylinder connecting rod to the inner right brake pedal connection point was detached and unrecovered.

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

Pilot Information

Certificate: Commercial
Age: 70, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Left
Other Aircraft Rating(s): Glider
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: Yes
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 06/19/2018
Occupational Pilot: Yes
Last Flight Review or Equivalent: 08/15/2018
Flight Time:  (Estimated) 17000 hours (Total, all aircraft), 2000 hours (Total, this make and model), 16000 hours (Pilot In Command, all aircraft), 150 hours (Last 90 days, all aircraft), 30 hours (Last 30 days, all aircraft), 3 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Cessna
Registration: N93039
Model/Series: A185 F
Aircraft Category: Airplane
Year of Manufacture: 1977
Amateur Built: No
Airworthiness Certificate: Other; Restricted
Serial Number: 18503169
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 07/24/2018, 100 Hour
Certified Max Gross Wt.: 3350 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 11241.8 Hours as of last inspection
Engine Manufacturer: Continental
ELT: C126 installed, not activated
Engine Model/Series: IO-550D
Registered Owner: Dorris, Michael R.
Rated Power: 300 hp
Operator: Sawtooth Flying Service
Operating Certificate(s) Held: On-demand Air Taxi (135)

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: MYL, 5024 ft msl
Distance from Accident Site: 5 Nautical Miles
Observation Time: 1010 MDT
Direction from Accident Site: 160°
Lowest Cloud Condition:
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: 11 knots / 5 knots
Turbulence Type Forecast/Actual:
Wind Direction: 330°
Turbulence Severity Forecast/Actual:
Altimeter Setting:
Temperature/Dew Point:21°C
Precipitation and Obscuration:
Departure Point: McCall, ID (KMYL)
Type of Flight Plan Filed: Company VFR
Destination: McCall, ID (KMYL)
Type of Clearance: None
Departure Time: 0700 MDT
Type of Airspace: Class G

Airport Information

Airport: McCall Municipal Airport (KMYL)
Runway Surface Type: Asphalt
Airport Elevation: 5024 ft
Runway Surface Condition: Dry
Runway Used: 34
IFR Approach: None
Runway Length/Width: 6108 ft / 75 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: 44.533333, -116.061111 (est)

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