From the 30th Nov 2015 edition of Vanity Fair (a publication not known for its aviation focus), an article some around this parish might find interesting, or indeed already be familiar with.
In the last decade, most of the big U.S. airlines have shifted major maintenance work to places like El Salvador, Mexico, and China, where few mechanics are F.A.A. certified and inspections have no teeth.
The Disturbing Truth About How Airplanes Are Maintained Today | Vanity Fair
JAS