Originally Posted by
albatross
I heard a vague unconfirmed rumour that the system installed on the 139 has significant penalties affecting the component life of the Main and TR blades. Perhaps due to the warming and cooling cycles.
Different P/N for the FIPS Main and Tail blades compared to standard blades, with different constructon and different stresses. So the life limit is different too. As more of the blades approach retirement, the life may be increased.