NTSB Identification: NYC91LA241.
The docket is stored on NTSB microfiche number 46134.
Accident occurred Friday, September 20, 1991 in WEXFORD, PA
Probable Cause Approval Date: 05/03/1993
Aircraft: ROBINSON R22B, registration: N2289K
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.

AT 600 FEET AGL THE PILOT ATTEMPTED A PRACTICE AUTOROTATION. AT 200 FEET AGL THE PILOT SAID THE ENGINE LOST POWER AND 'STOPPED COMPLETELY'. THE PILOT DID NOT INDICATE WHAT HIS ENGINE OR ROTOR INSTRUMENTS WERE INDICATING PRIOR TO THE LOSS OF ENGINE POWER. THE MAIN ROTOR BLADES CONTACTED TREES AT APPROXIMATELY 25 FEET AGL, AND THE HELICOPTER CAME TO REST ON A 25% UPWARD SLOPE. THE HELICOPTER AND ENGINE WERE REMOVED FROM THE ACCIDENT SITE. THE FAA TEST RAN THE ENGINE FOR 45 MINUTES AND DID NOT FIND ANY DISCREPANCIES.

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

THE PILOT'S IMPROPER PROCEDURES DURING A PRACTICE AUTOROTATION, AND SELECTION OF UNSUITABLE TERRAIN. CONTRIBUTING TO THE ACCIDENT WAS A LOSS OF ENGINE POWER FOR UNDETERMINED REASONS, AT A LOW ALTITUDE.

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