DURHAM, CA, USA
N1048P
HILLER UH-12B
THE PURPOSE OF THE LCL FLIGHT WAS FOR THE CFI TO DEMO THE NEWLY ACQUIRED HELICOPTER TO ITS OWNER. THE CFI REPORTED THAT DURING THE FLT A 'SOMEWHAT COMMON' VIBRATION WAS DETECTED, & HE ASSOCIATED THE VIBRATION WITH THE ACFT'S WOODEN MAIN ROTOR BLADES. HE FURTHER REPORTED THAT HE MAY HAVE BEEN DISTRACTED BY THE VIBRATION, & HE FAILED TO OBSERVE THE POWER LINES WHICH WERE IN THE LANDING APPROACH PATH. AT ABOUT 60 FT AGL THE ACFT'S MAST COLLIDED WITH THE WIRES. CONTROL WAS LOST, & DURING THE HARD LANDING THE BLADES FLEXED DOWN CUTTING OFF THE TAIL BOOM.
Source: NTSB Aviation Accident Database
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