Thursday, July 05, 2018

Experimental; aerobatic Smith Trike, N11VW: Accident occurred July 04, 2018 in Lewistown, Fulton County, Illinois

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Springfield

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: Lewiston, IL
Accident Number: GAA18CA397
Date & Time: 07/04/2018, 0835 CDT
Registration: N11VW
Aircraft: ROBERT MILES Smith Trike
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 Minor
Flight Conducted Under: Part 91: General Aviation - Personal 

The pilot reported that during cruise flight into "wispy clouds," the engine started to "run rough" then lost all power. About 800 ft. agl, he restarted the engine, but it quit again. He attempted to restart the engine multiple times but was unsuccessful, so he selected a gravel road for landing. During the landing, the airplane ground looped into a ditch.

The pilot added that he did not apply carburetor heat during the accident flight.

The biplane sustained substantial damage to the right 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 25 nautical miles away from the accident site reported that, about the time of the accident, the wind was from 170° at 5 knots, visibility of 7 statute miles, clouds broken at 4,800 feet above aerodrome level, temperature at 77°F, and dew point at 75°F.

Review of the Federal Aviation Administration Carburetor Icing Chart for the given temperature and dew point revealed that the conditions were conducive to "serious icing (glide power)." (For more information, see Special Airworthiness Information Bulletin CE-09-35 in the public docket.)

Pilot Information

Certificate: Private
Age: 72, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Single
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: 12/01/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 04/20/2018
Flight Time:  (Estimated) 770 hours (Total, all aircraft), 73 hours (Total, this make and model), 750 hours (Pilot In Command, all aircraft), 5.6 hours (Last 90 days, all aircraft), 4.6 hours (Last 30 days, all aircraft), 0.8 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: ROBERT MILES
Registration: N11VW
Model/Series: Smith Trike
Aircraft Category: Airplane
Year of Manufacture: 1991
Amateur Built: Yes
Airworthiness Certificate: Experimental; Aerobatic
Serial Number: 001RM
Landing Gear Type:Tricycle 
Seats: 1
Date/Type of Last Inspection: 05/07/2018, Condition
Certified Max Gross Wt.: 940 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 72.8 Hours at time of accident
Engine Manufacturer: Continental
ELT: Not installed
Engine Model/Series: A&C65 SERIES
Registered Owner: On file
Rated Power: 80 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: KMQB, 707 ft msl
Distance from Accident Site: 25 Nautical Miles
Observation Time: 1335 UTC
Direction from Accident Site: 295°
Lowest Cloud Condition:
Visibility:  7 Miles
Lowest Ceiling: Broken / 4800 ft agl
Visibility (RVR):
Wind Speed/Gusts: 5 knots /
Turbulence Type Forecast/Actual: None / None
Wind Direction: 170°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 30.23 inches Hg
Temperature/Dew Point: 25°C / 24°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Springfield, IL (SPI)
Type of Flight Plan Filed: VFR
Destination: Monmouth, IL (C66)
Type of Clearance: None
Departure Time: 0615 CDT
Type of Airspace: Class G 

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Minor
Latitude, Longitude: 40.346111, -90.168056 (est)

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