I did my crop spray training in Hillers and Bell 47,s at Ag Rotors nr Gettysburg in 1981, any idea if they are still going ? Trained with Hank Whitfield who had 20,000 hrs of 47 !! In one day we took out a Hiller and tried to split the needles and main rotor rpm plummeted , got back , took their old wooden blade 47 and a piece came off one blade.....shook so bad you couldnt read the instruments !! Didnt fly any more that day............
