When to replace a prop?

On Feb 15, 6:27*am, Ron Rosenfeld wrote:

This seems to be a hot ticket item for you. *Do you have a reference that
is accessible over the internet?

These things happen in stages (like the Lycoming crank). We alrady
have an AD that requires you either replace the hub with a newer hub
or do a 100 hr ECI inspection. We also have an AD requiring mandatory
overhaul of blades that are 30 years old (just came out this month).
The two prop shops I spoke to about this said Hartzell is telling them
that they feel the need to remove all older props out of the system.
They are offering discounts for customers to trade in their entire
assemblies for new (that deal is now expired but may come back).

My blades are old and likely will not meet spec as they get shaved down
from nicks and such. *But there's still plenty of metal there.


My hub was replaced last year.

Then you probably already have the magic Y hub.

It wouldn't surprise me that the mfg's want to get older props declared
unairworthy. *Our legal system seems to hold the mfg liable, in some
instances, even when the user does not follow the mfg recommended
maintenance procedures. *

Perhaps it'll be a mandatory overhaul requirement if/when it comes out.

Its not overhaul, its a new model number. You already have the new Y
model number hub, the blades are expected to require a new model
number in the future.

-Robert