AD 81-19-04

[Dave]

[Jay]

[tomgo2]

Hi Everyone,

Just curious how many people here have to go through this painful process every 5 years? Does anyone know the reasoning behind this AD or what drove this requirement? I got a quote for $3,000. Is this reasonable?

I am looking into doing an STC to replace the hoses and would like to know if anyone else would be interested in supporting this. The STC would replace the lines with qualified PMA hoses and an instructions for continued airworthiness that could extend the life of the lines or provide reasonable inspection requirements that could extend the life.

Tom

[Clarence Beintema]

Wouldn't it make more sense to apply for an AMOC by installing better hoses and seeking a longer life?

Clarence

[tomgo2]

Hi Clarence,

Good point. Has anyone been successful in doing this?

I suppose I could get a Powerplant DER to approve replacement hoses and apply for an AMOC, but I would prefer to go a little further and make it a marketable solution to others and sell PMA'd hoses.

How many twincos do you think are out there with turbos?

Tom