This Aerospace Standard (AS) is to be used as a supplement to SAE AS7109. In addition to the requirements contained in AS7109, the requirements contained herein shall apply to suppliers seeking NADCAP Coatings accreditation who are engaged in thermal spray.1.1 The requirements for accreditation for the following classes are contained herein:Class A – OXY/Fuel Powder & Wire SprayClass B – Plasma Thermal SprayClass C – HVOF/D-Gun SprayClass D – Low Pressure Plasma Spray (LPPS)Class E – Electric Arc Wire Spray1.2 The requirements for accreditation for the following coating groups are contained herein:High/low temperature hard coatingsAnti fretting coatingsThermal barrier coatingsAbradable coatingsDimensional build-up coatingsHigh temperature coatings (LPPS)