Aviation Accident Summaries

Aviation Accident Summary MKC83FA073

COUNCIL BLUFFS, IA, USA

Aircraft #1

N1040S

HUGHES TH-55A

Analysis

THE STUDENT, WHO WAS A RATED HELICOPTER PLT, AND A HELICOPTER INSTRUCTOR (CFI) WERE ON A DUAL INSTRUCTIONAL FLT. AFTER TAKEOFF, THE AIRCREW REMAINED IN A RIGHT TRAFFIC PATTERN FOR RWY 13 , INTENDING FOR THE STUDENT TO MAKE A 180 DEG AUTOROTATION TO A PARALLEL TAXIWAY. THE STUDENT OVERSHOT THE AUTOROTATIVE TURN & THE CFI INSTRUCTED HIM TO CONTINUE THE APCH TO A GRASS AREA BETWEEN THE TAXIWAY & RWY. THE CFI REPORTED THAT THE TOUCHDOWN WAS SMOOTH WITH ZERO AIRSPEED. HOWEVER, THE HELICOPTER BEGAN VIBRATING & TURNED TO THE LEFT. REPORTEDLY, THE MAIN ROTOR BLADES HAD SEVERED THE TAIL BOOM.

 

Source: NTSB Aviation Accident Database

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