NTSB CAROL · Event
Event MIA85LA185
Aircraft involved
Factual narrative
THE HELICOPTER WAS LANDING AFTER A TRAINING FLIGHT WITH AN INSTRUCTOR PILOT AND A NON-RATED-NON-CERTIFICATED STUDENT PILOT ON BOARD. AS THE HELICOPTER TOUCHED DOWN A SEVERE RESONANT VIBRATION STARTED. THE INSTRUCTOR STATED THAT HE ATTEMPTED TO LIFT OFF THE GROUND BUT THE COLLECTIVE IMPUT GAVE NO RESPONSE. THE CLUTCH PULLEY BRACKET WAS FOUND FAILED DUE TO OVERLOAD. WITNESSES DESCRIBED THE VIBRATION AS TYPICAL OF GROUND RESONANCE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
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NTSB_1985_MIA85LA185.txt.
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