Rough River State Park Airport
Aircraft Accident/Incident Report

Falls Of Rough, Kentucky 40119
Friday, September 30, 2011 13:03 CDT

NTSB Narrative Summary Released at Completion of Accident

According to witnesses, the airplane departed the airport and circled back to make a fly-by over the runway. As the airplane flew over the runway, a witness reported that the engine sounded like it “over revved.” Witnesses also stated that they saw what appeared to be a puff of smoke emitting from the nose of the airplane. The pilot made a left banking turn, and then entered a left downwind for the runway. The engine power seemed to surge as the airplane descended. Then the engine went silent and the airplane turned toward the airport but did not have enough altitude to reach the runway. The pilot appeared to level the wings, and the landing gear was lowered as the airplane descended into the trees, struck a building, and exploded. A postaccident examination of the airplane revealed that it was equipped an automotive Chevrolet LS1 engine. The airplane’s propeller was attached to a propeller speed reduction unit (PSRU). The system was designed with an automatic clutch and was tuned to remain disengaged at idle and engage with an increase in power. An examination of the PSRU revealed that the propeller drive shaft fractured as a result of fatigue. This fracture separated the propeller drive gears from the clutch, which resulted in the loss of power to the propeller. Given the witness accounts of the loss of engine power, it is likely that the airplane lost airspeed and altitude due to this condition.

NTSB Probable Cause Narrative

The failure of the propeller power speed reduction unit, which resulted in a loss of engine power at low altitude.

Event Information

Type of Event Accident
Event Date 9/30/2011
Event Day of the Week Friday
Time of Event 1303
Event Time Zone Central Daylight Time
Event City Falls of Rough
Event State KENTUCKY
Event Country --
Zipcode of the event site 40119
Event Date Year 2011
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 370025N
Event Location Longitude 0855410W
Event Location Airport Rough River State Park Airport
Event Location Nearest Airport ID 2I3
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1255 Central Daylight Time
Direction of event from weather observation facility (degrees) 235
Weather Observation Facility ID FTK
Elevation of weather observation facility 755
Distance of event from weather observation facility (units?) 31
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 6500
Lowest Non-Ceiling Height 4300
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 17
Altimeter Setting at event time (in. Hg) 29.97
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 31333
NTSB Notification Source FAA Southern ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record May 3 2013 10:37AM
User who most recently changed record gots
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N43KH
NTSB Number ERA11FA512
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name HERONIMUS KEVIN A
Aircraft Model GLASAIR III
Aircraft Series Identifier --
Aircraft Serial Number 3021
Certified Max Gross Weight 2140
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats 2
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Conditional
Date of Last Inspection Oct 10 2010 12:00AM
Airframe hours since last inspection --
Airframe Hours 127
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name LUCKY BOULDER LLC
Aircraft Owner Street Address 2021 ALTA AVE
Aircraft Owner City LOUISVILLE
Aircraft Owner State KY
Aircraft Owner Country USA
Aircraft Owner Zipcode 40205-1101
Operator is an individual? Yes
Operator Name Lyle R. Moss
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Louisville
Operator State KY
Operator Country USA
Operator Zip code 40205
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 2I3
Departure City Falls of Rough
Departure State KY
Departure Country USA
Departure Time 1255
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 2I3
Destination City Falls of Rough
Destination State KY
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 3 2013 10:38AM
User who most recently changed record gots
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --