Aircraft Accident/Incident Report

Bowling Green, Kentucky 42103
Monday, March 23, 1992 17:07 CDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT HAD TOLD FRIENDS THAT HE WAS TEACHING HIMSELF TO FLY THE HELICOPTER INSTEAD OF ATTENDING THE MANUFACTURER'S TRAINING COURSE. HE ALSO REPORTED THAT HE HAD BEEN PRACTICING AUTOROTATION FROM 4000 FEET MSL AND DOING A POWER RECOVERY AT 2000 FEET MSL. ON THE DAY OF THE ACCIDENT, THE PILOT INDICATED THAT HE FELT CONFIDENT ENOUGH TO DO A POWER OFF AUTOROTATION TO THE GROUND. SHORTLY BEFORE THE ACCIDENT, A WITNESS SAID HE HEARD THE HELICOPTER FLY OVER AT 600 FEET AGL HEADED SOUTH. HE HEARD TWO LOUD BANGS AND THEN HE NOTICED THE HELICOPTER SPINNING TO THE RIGHT. THE HELICOPTER DESCENDED AND CRASHED IN AN OPEN FIELD. THE INVESTIGATION DID NOT DISCLOSE EVIDENCE OF MECHANICAL MALFUNCTION.

NTSB Probable Cause Narrative

THE PILOT'S FAILURE TO MAINTAIN ADEQUATE ROTOR RPM WHICH RESULTED IN THE INFLIGHT LOSS OF CONTROL. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S LACK OF EXPERIENCE AND OVERCONFIDENCE IN HIS ABILITY.

Event Information

Type of Event Accident
Event Date 3/23/1992
Event Day of the Week Monday
Time of Event 1707
Event Time Zone Central Daylight Time
Event City BOWLING GREEN
Event State KENTUCKY
Event Country --
Zipcode of the event site 42103
Event Date Year 1992
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1707 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID BWG
Elevation of weather observation facility 547
Distance of event from weather observation facility (units?) 4
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency FAA
NTSB Docket Number (internal use) 2056
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 46848
Date of most recent change to record Dec 11 2000 2:47PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N191JD
NTSB Number BFO92FLQ01
Missing Aircraft Indicator N
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 JAMES D. RIEHM
Aircraft Model ROTORWAY EXEC
Aircraft Series Identifier ROTORWAY E
Aircraft Serial Number 544
Certified Max Gross Weight 1425
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 15 1991 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name JAMES DENNIS RIEHM
Aircraft Owner Street Address 1413 EUCLID AVENUE
Aircraft Owner City BOWLING GREEN
Aircraft Owner State KY
Aircraft Owner Country
Aircraft Owner Zipcode 42103
Operator is an individual? --
Operator Name JAMES DENNIS RIEHM
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 1413 EUCLID AVENUE
Operator City BOWLING GREEN
Operator State KY
Operator Country
Operator Zip code 42103
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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
Departure City
Departure State
Departure Country
Departure Time 1638
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --