As far as FAA acceptance of foreign Airworthiness Certification, I can offer a bit of personal experience. When we were trying to find a solution to the Pegase 3,000 hour life-limit AD imposed by the FAA, we brought up the fact that it is certificated by EASA in Europe and also the DGAC in France, both of which are covered by the "Bilateral Aviation Safety Agreements" included in the FAA's "Mission Statement:"

(http://www.faa.gov/aircraft/air_cert..._basa_listing/)

The AD's author quite explicitly stated, "We don't pay much attention to things like that." He has no idea how close he came.....