Enstrom main rotor blades are "on condition" with no specific hours to
replacement. Three major problems that can occur a delamiantion,
errossion and corrosion. The MR baldes on that particular F-28C-2 are
delaminated. The TR blades are also damaged. I know of another Enstrom
mechanic who went and looked at it. It needs alot of work and major
bucks to made it airworthy. Be care, the price is too high for that
Enstrom.