NTSB Identification: FTW85FA130.
The docket is stored on NTSB microfiche number 28224.
Accident occurred Saturday, March 02, 1985 in SAN ANTONIO, TX
Aircraft: HUGHES 269C, registration: N9664F
Injuries: 1 Serious,1 Minor.

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.

THE ACCIDENT OCCURRED DURING A ZERO GROUND SPEED PRACTICE AUTOROTATION. A HIGH SINK DEVELOPED AFTER AN ATTEMPT TO CORRECT FOR DECREASING ROTOR RPM, THE HELICOPTER CONTACTED THE GROUND TAIL FIRST AND ROLLED OVER AFTER THE MAIN ROTOR SEVERED THE TAIL BOOM. AN EXPERIENCED HELICOPTER PLT WHO WITNESSES THE ACCIDENT STATED THAT THE AUTOROTATIONS WERE TERMINATED ABRUPTLY WITH AN EXTREMELY NOSE HIGH ATTITUDE.

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

AIRCRAFT HANDLING..IMPROPER..PILOT IN COMMAND(CFI)

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

ADEQUATE ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND(CFI)

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

REMEDIAL ACTION..EXCESSIVE..PILOT IN COMMAND(CFI)

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