NTSB Identification: FTW92LA199.
The docket is stored on NTSB microfiche number 47326.
Accident occurred Monday, August 03, 1992 in MONROE, LA
Probable Cause Approval Date: 06/11/1993
Aircraft: HUGHES 369HS, registration: N501FH
Injuries: 2 Minor.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
THE PURPOSE OF THE FLIGHT WAS TO TRACK THE MAIN ROTOR SYSTEM. THE DEPARTURE WAS TO THE SOUTHEAST AND THE WINDS WERE FROM THE WEST AT 5 KNOTS. DURING THE INITIAL CLIMB AT APPROXIMATELY 100 FEET AGL AND APPROXIMATELY 35 KNOTS AIRSPEED, A TOTAL LOSS OF POWER OCCURRED. THE PILOT INITIATED AN AUTOROTATION TO THE GRASS ABEAM A RUNWAY. DURING THE FLARE THE PILOT DID NOT MAINTAIN ADEQUATE ROTOR RPM AND THE HELICOPTER LANDED HARD, COLLAPSING THE SKID GEAR AND SEVERING THE TAIL BOOM. THE ENGINE WAS TEST RUN AT THE MANUFACTURER'S FACILITY WITH NO ANOMALIES NOTED. ADDITIONAL TESTS ON THE ENGINE'S RELATED SYSTEMS DID NOT REVEAL THE REASON FOR THE LOSS OF POWER.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE PILOT'S FAILURE TO MAINTAIN ADEQUATE ROTOR RPM DURING AUTOROTATION. FACTORS WERE THE TAILWIND AND THE POWER LOSS FOR UNDETERMINED REASONS.
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