Bell 47H-1 Bellairus Helicopter. Flight around Niagara Falls Airport.

[@HongyaMa]

Test flew one of these after some work was done on it, They put the China weights backwards on it. It would pull its own collective when Rotor RPM was in the mid green on the tach. The fixed it and was a nice flyer

[@avalanche9026]

Tipic vibration. Little Wendy ?? Probably

[@garymclachlan9193]

What.should.have.shown.the.whole.helicopter