NTSB Identification: CHI88DEI02.
The docket is stored on NTSB microfiche number 39185.
Accident occurred Monday, July 18, 1988 in NORTH LIMA, OH
Probable Cause Approval Date: 06/25/1990
Aircraft: GEDDES COMMANDER 503, registration: N9173W
Injuries: 1 Serious.

THE GYROPLANE STRUCK A TREE WITH THE MAIN ROTOR BLADES AND DESCENDED OUT OF CONTROL INTO TERRAIN. THE PILOT WAS ATTEMPTING TO STRETCH A PARTIAL POWER EMERGENCY DESCENT TO REACH HIS INTENDED TOUCH DOWN POINT. THE PILOT REPORTED A PARTIAL POWER LOSS. NO MALFUNCTIONS OR MECHANICAL FAILURES WERE FOUND.

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

PILOTS CONTINUED OPERATION OF THE AIRCRAFT WITH A KNOWN DEFICIENCY AND ATTEMPTING TO STRETCH HIS PARTIAL POWER DESCENT TO REACH A RUNWAY RATHER THAN LAND OFF AIRPORT.

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