Propellers - Overhaul or IRAN?

[n86121]

As I understand it, an IRAN is basically a prop overhaul without re-doing the blades?

Everything is pulled apart, inspected, and if ok, seals replaced etc.

The blades are just checked, stripped and painted., but not re-ground or re-bent.


On Ye Olde threaded blades, they CAN treat minor corrosion, so not a death sentence.


On an overhaul they grind material off the blades to make them 'like new.'

BUT, you only get a few OH on the blades, if the material goes below limits.

Is that about right?

So if your blades are in good shape, why not just IRAN periodically?