NTSB Identification: SEA85LA129.
The docket is stored on NTSB microfiche number 27765.
Accident occurred Saturday, June 08, 1985 in PORT ORCHARD, WA
Aircraft: ROBINSON R22, registration: N8490D
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 INSTRUCTOR PLT (CFI) WITH ONLY 358 HRS TOTAL FLT TIME WAS DEMONSTRATING AN AUTOROTATION WITH A POWER RECOVERY. DURING THE RECOVERY, THE CFI FAILED TO FULLY REGAIN RPM & THE HELICOPTER SETTLED TO THE SURFACE. WITH A LOW ROTOR RPM, THERE WAS A LOSS OF TAIL ROTOR EFFECTIVENESS & THE HELICOPTER TURNED TO THE RIGHT. SUBSEQUENTLY, THE HELICOPTER TOUCHED DOWN WITH FORWARD MOVEMENT & RIGHT YAW, THEN ROLLED OVER. THE CFI REPORTED THAT THE WIND WAS FROM THE NORTH AT 10 GUSTING 15 KTS.

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

ALTITUDE..MISJUDGED..PILOT IN COMMAND(CFI)

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

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



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