Originally Posted by
stevef
I'd be very concerned in that case, you could be flying on borrowed time. Google Piper SB 1006 and EASA Airworthiness Directive 2005-0032. The hidden spars are supposed to be inspected at seven year intervals. Your maintenance technical records department should be aware of that.
There is no requirement in USA to comply with a Piper Service Bulletin unless it is invoked by an associated Airworthiness Directive. I can find no FAA AD that requires compliance with SB 1006. The only reference I found to SB 1006 is here -
https://www.federalregister.gov/docu...-inc-airplanes
That reference says recent compliance with SB 1006 is not sufficient to meet the requirements of that AD.
I'm not saying that removal of the fuel tanks every 7 years isn't a good idea. I'm just saying that I'm not aware of any FAA requirement to do so. I don't doubt there are many PA-28 flying in USA that are not compliant with SB 1006.