Quick view Add to Cart Operation, Service and Overhaul Instructions with Illustrated Parts Breakdown for Demand Oxygen Mask - Type A-14A Document Part Number: NAVWEPS 03-50B-6, T.O. No. 15X5-3-2-1 Number of pages: 20Part Number: NAVWEPS 03-50B-6, T.O. No. 15X5-3-2-1Revision Date: 1-Oct-1956 MSRP: Was: Now: $16.26