MIL-HDBK-2173, DEPARTMENT OF DEFENSE HANDBOOK: RELIABILITY-CENTERED MAINTENANCE REQUIREMENTS FOR NAVAL AIRCRAFT, WEAPONS SYSTEMS AND SUPPORT EQUIPMENT (30 JAN 1998) [S/S BY NAVAIR 00-25-403]., The purpose of this standard is to provide the procedures for a Reliability-Centered Maintenance (RCM) analysis for Naval Aircraft, weapons systems, and support equipment (SE).