Propellers - Overhaul or IRAN?
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?
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David Wartofsky
Potomac Airfield
10300 Glen Way
Fort Washington, MD 20744
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