Hi David;
I recommend spending the extra to get what Michelin calls its “Airstop” tubes. Another company calls theirs Leakguard.
These tubes won’t leak, unlike the less expensive ones.
This saves time and banged up knees from having to refill the tires every month or so.
I’m assuming the AD you’re referring to is Piper 2020-24-05, calling for an inspection of the inner section of the L and R wing spar for corrosion.
The area can be inspected initially with a flexible borescope. And that will tell if there’s corrosion.
If there’s any visual evidence of corrosion, you’ll have to wait for the inspection panel kit and do the full inspection.
There is a provision to do the inspection using a borescope but I believe the AD requires the use of a 10 power magnifying borescope. Those are pretty expensive and unless there’s a shop nearby that works on a lot of turbine engines, you won’t be able to complete the inspection using the borescope method.
Have you taken the fuel tanks out? It’s a pretty common practice to comply with Piper SB 1006 which calls for an inspection for corrosion behind each fuel tank.
Removing the tanks provides a lot of access to the front side of the spar and does open up limited access to the rear spar. I’ve attached the bulletin.
Keep on,
One of these days you will be aviating.
Steve
