Rough comparisons....
S61 59 feet long, rotor diameter 62 feet max weight 19,000 lbs
53D 88 feet long, rotor diameter 72 feet, max weight 42,000 lbs
234 99 feet long, rotor diameter 60 feet, max weight 50,000 lbs
I think the weights for the 53D/234 might be the max weight for external load ops.
Last edited by SASless; 1st Sep 2013 at 14:37.