NTSB Identification: CHI98LA339.
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Accident occurred Wednesday, September 16, 1998 in GREEN BAY, WI
Probable Cause Approval Date: 05/19/1999
Aircraft: Enstrom 480, registration: N142CC
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 pilot was practicing autorotations terminating with power. Power was applied at an altitude approximately 8 feet agl and the engine responded, but not in time to arrest the descent rate.

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

the pilot's failure to maintain adequate rotor rpm during a practice autorotation.

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