So Grounded, Only A&Ps can do any work on US Line maintenance, regardless if they are signing off the work or not? Of course I wasn't refering to CFR14 regs (because I don't work under them). Out of interest, is it a requirement under FAR 121? Of course third party MROs are there to make money, its up to the FAA to regulate them and dump the chaff from the wheat. Trouble is no reporting system is confidential enough to flush out cowboy practice IMHO.
Your first post looked like it was written with two bottles of Jack Daniels BTW. So many typo's!