NTSB Identification: ATL87FA147.
The docket is stored on NTSB microfiche number 33762.
Accident occurred Sunday, May 24, 1987 in SPARTANBURG, SC
Probable Cause Approval Date: 05/02/1988
Aircraft: HILLER UH-12D (H23), registration: N6408
Injuries: 1 Fatal,1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

DURING A LOCAL PLEASURE FLIGHT ABOVE THE TREETOPS, THE PASSENGER REPORTED THAT THEY HEARD A LOUD 'POP' OVER THE SOUND OF THE ENGINE. THE PLT TOLD HER THAT THEY WERE GOING DOWN AND SHE NOTICED THE MAIN ROTOR BLADES BEGAN TO TURN SLOWER THAN USUAL BEFORE THE HELO COLLIDED WITH TREES AND THEN THE GROUND. A PROLONGED POST IMPACT GROUND FIRE CONSUMED THE WRECKAGE. THOROUGH EXAMINATION OF THE FLIGHT CONTROLS, ENGINE AND TRANSMISSION ASSEMBLY DID NOT REVEAL ANY EVIDENCE OF MECHANICAL MALFUNCTION. THE FUEL AND IGNITION SYSTEM WAS COMPLETELY DESTROYED BY FIRE AND WAS UNABLE TO BE EVALUATED. ASSOCIATES OF THE PILOT STATED THAT HE USUALLY OPERATED AT APPROX 200 FT AGL.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT HANDLING..POOR..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ALTITUDE..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AUTOROTATION..NOT PERFORMED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

EMERGENCY PROCEDURE..POOR..PILOT IN COMMAND


Contributing Factors

ENGINE ASSEMBLY,OTHER..UNDETERMINED


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