Thin liner in wing tank

Thanks Warren!

Robert, call Bill Lull in Ramona, Ca. Former owner of 00H 619-977-6981 He and partner did a lot to her so in your quest of info he would be the guy!

Good point. Im axing the idea of using the screw method.

For my motorcycle tanks I fill them with screws and shake them to remove all of the liner. Then remove the screws and remove the dust with a vacuum, etc. This method has worked well for me in the past.

Any reason why this would not be a good idea for aircraft tanks. I researched and could not find anyone in the 'airplane world' who has used this method.

That is sloshing compound and it is coming off, any thing other than fuel in the system is a reason for concern, it looks like there is PRC sealant from other work. If it was mine, I would pull the tank, drill the rivets and open the tank, clean out the old sealant and reseal with PRC and rivet the tank closed. the repairs will last many many years.