ITO,
Having been trained as a pilot with helicopters around EHV lines, this film put's it so succintly.
All nice and quiet no rotor wash, no comms between the pilot and the Line Mechanic.
Believe me, it's not like that at all.
I've flown choppers next to 500kV DC lines and 110 and 220kV AC lines checking the insulators.
Having a steady hand on your controls is imperative.
Inch one foot forward or sideways can be fatal to both you and the lineman sitting on the deck on your chopper.
One thing has to be said about choppers that are connected to High Voltages like this.
The body of the Chopper is bonded all over the place and even the different parts of the engine are bonded with heavy wire links.
To have a circulating (Eddy) current in a metallic engine would be death to it.
What's more is the fact that the Main Rotor and the Tail Rotor work on bearings.
Having bearing races weld through the Eddy currents, would have the same result.
