FALLBROOK, CA, USA
N5035F
HUGHES 369B
THE PILOT AND NONFLYING CREWMEMBER WERE PLACING MARKER BALLS ON HIGH TENSION WIRES. THE PILOT MISJUDGED THE DISTANCE FROM THE WIRES AND A MAIN ROTOR BLADE STRUCK THE UPPER GUIDE WIRE OF THE HIGH TENSION WIRES. THE MAIN ROTOR BLADE SEVERED THE TAIL BOOM ASSEMBLY. THE HELICOPTER ROTATED AFTER THE IMPACT AND THE TAIL BOOM ASSEMBLY STRUCK THE HIGH TENSION WIRES STANCHION. THE HELICOPTER PLUMMETED, UNCONTROLLED, TO THE GROUND. THE WRECKAGE AND VIDEO TAPE EXAMINATION DISCLOSED NO EVIDENCE OF ANY PREEXISTING MALFUNCTIONS OR FAILURES.
THAT THE PILOT MISJUDGED THE DISTANCE OF THE HIGH TENSION WIRES FROM THE HELICOPTER.
Source: NTSB Aviation Accident Database
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