Describes the procedure governing the approval of proprietary materials and processes. It also includes appendices listing all materials and processes approved under its terms together with the name and address of the manufacturer or proprietor, the trade name of the material or process, if any, and the approval serial number. Also contains detailed appendices.

This standard was declared obsolescent on 1 April '99 It will no longer be updated but will be retained to provide for the servicing of existing equipment

DTD 900Z