It is the policy of Pratt & Whitney to eliminate or reduce the use of MOC in the design, manufacture, assembly, disassembly, maintenance, repair, overhaul, operation and disposal of our products. The Pratt & Whitney MOC list identifies materials that are prohibited or restricted from use in Pratt & Whitney products. The list provides substance classifications in accordance with specification PWA 328 for use during the product design approval process. Material or process substance use declarations are also based on the MOC list, as applicable.
To meet customer and regulatory compliance requirements, Pratt & Whitney depends on suppliers to submit and update Material Declarations on request. Pratt & Whitney requires design-responsible suppliers to meet the requirements of specification PWA 328 for new designs, and to respond to material declaration requests for existing designs using the Material Declaration form below: