NTSB Identification: SEA89LA100.
The docket is stored on NTSB microfiche number 40047.
Accident occurred Monday, June 05, 1989 in PRINEVILLE, OR
Probable Cause Approval Date: 08/02/1990
Aircraft: ROBINSON R-22, registration: N8022Q
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.

WHILE THE PILOT WAS ATTEMPTING TO READ ROAD SIGNS TO DETERMINE HIS LOCATION, THE AIRCRAFT TAILROTOR STRUCK A ROAD SIGN AND ANTITORQUE CONTROL WAS LOST. THE AIRCRAFT BEGAN SPINNING TO THE RIGHT AND IMPACTED IN THE ROAD.

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

THE PILOTS INADEQUATE VISUAL LOOKOUT AND FAILURE TO MAINTAIN CLEARANCE FROM OBSTRUCTIONS, RESULTING IN THE TAIL ROTOR IMPACTING A ROAD SIGN AND SUBSEQUENT LOSS OF ANTI-TORQUE CONTROL.

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