DOT / FAA Documents: Cylinder Manufacturer's Symbols   DOT List of Symbols  (Includes IIA's)   Foreign Manufacturers (M-numbers)   Independent Inspection Agencies   3AL Advisory regarding 6351 alloy   Safety Advisory regarding 6351 alloy   3 year or 5 year test for E-10915   Discontinued Specifications   FAA Order 8300.10 Appendix 3   Manufacturers Documents: Luxfer's 6351 alloy dates   PST Technical Bulletin: Galvanized SCUBA   PST Technical Bulletin: DOT-E9791 or TC-SU4349-241   SCI Technical Bulletin: Fiberglass and Kevlar   SCI Technical Bulletin: Carbon Fiber   TW REE Values     Other: Sample Condemnation Letter: Adobe Acrobat PDF, Microsoft Word DOC