NTSB Identification: SEA85LA174.
The docket is stored on NTSB microfiche number 28639.
Accident occurred Friday, July 19, 1985 in LEBANON, OR
Aircraft: Bell 47G-3B-1, registration: N9417A
Injuries: 2 Uninjured.

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 PLT STATED HE PERFORMED 4 CIRCLING APPROACHES OVER A SAND BAR AND ON THE 5TH APPROCAH, ROTOR RPM DECAYED. UNABLE TO REGAIN THE RPM, A HARD LANDING RESULTED DURING WHICH THE MAIN ROTOR BLADES SEVERED THE TAILROTOR.

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

IN-FLIGHT PLANNING/DECISION..MISJUDGED..PILOT IN COMMAND

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

ADEQUATE ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND

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