NTSB Identification: SEA92LA088.
The docket is stored on NTSB microfiche number 46594.
Accident occurred Friday, May 01, 1992 in HILLSBORO, OR
Probable Cause Approval Date: 08/13/1993
Aircraft: HUGHES 369E, registration: N5211Y
Injuries: 3 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.
DURING AN PRACTICE AUTOROTATION THE PILOT APPLIED TOO MUCH COLLECTIVE TOO EARLY AND THE HELICOPTER LANDED HARD RESULTING IN THE MAIN ROTOR BLADES FLEXING DOWN AND SEVERING THE TAILBOOM ASSEMBLY.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE PILOT IN COMMAND'S EXCESSIVE APPLICATION OF COLLECTIVE.
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