understand the different types, titles, categories, arrangement, and locations of applicable supply data included in them. A TD may direct that com- ponent parts or material be added, removed, changed, altered, relocated, or repositioned. NAVAIR has management responsibility for the configuration management program. This pro- gram was established to control and track modifications to aeronautical equipment using the TD system. Specific information concerning the TD program is in NAVAIRINST 5218.8. Additional information concerning TD com- pliance at the O-, and I-, and D-levels, documen- tation procedures, and reporting requirements may be found in volumes II, III, and IV of Naval Aviation Maintenance Program (NAMP), OP- NAVINST 4790.2. There are two types of TDs, formal and informal, which are distinguished by their method of dissemination. They are normally distributed as technical notes/orders, bulletins, or changes. There are three action categories of TDs: immediate, urgent, and routine. These categories are important to the AK because they determine the priority on which the TD kits/parts may be requisitioned. These categories are as follows: Immediate, This category is assigned to TDs when an uncorrected safety condition exists that could result in a fatal or serious injury to person- nel, destruction to valuable property, or extensive damage. Compliance must be accomplished before returning aircraft or equipment to service. Kits/parts required in this category should be requisitioned using supply issue group I. Urgent. This category is assigned to TDs when a potentially hazardous condition exists that, if uncorrected, could result in injury to personnel, damage to valuable property, or unacceptable reduction in operational efficiency. Although this category does not remove aircraft/equipment from service, it does have a date or specific time frame (for example, next phase inspection) assigned by which the TD must be accomplished. Kits/parts in this category should be ordered using supply issue group I or II, depending on the date assigned for completion. Routine. This category is assigned to TDs when there are reliability, capability, or main- tainability deficiencies that, if uncorrected, could become a hazard through prolonged use or have an adverse effect on the life or use of the affected equipment. This category does not have specific compliance dates assigned. Kits/parts in this category should be requisitioned using supply issue group III. INSTRUCTIONS AND NOTICES Various instructions and notices issued by DOD, OPNAV, SECNAV, NAVSUP, and ASO are covered in the following paragraphs. Naval Aviation Maintenance Program The Naval Aviation Maintenance Program (NAMP), OPNAVINST 4790.2, is sponsored and directed by the CNO and addresses CNO con- cepts, objectives, policies, programs, organiza- tions, and responsibilities as they apply to aviation maintenance for each level of command. Each level is discussed in detail within each volume as follows: Volume I. Concepts, Objectives, Policies, Organizations, and Representatives Volume II. Organizational Level Maintenance Volume III. Intermediate Level Maintenance Volume IV. Depot Level Maintenance Volume V. Data Processing Requirements OPNAVINST 4790.2 is the basic instruction that outlines duties and responsibilities of a supervisor working in material control divisions of a squadron or an aircraft intermediate maintenance department (AIMD) or involved in SSC operations. Uniform Material Movement and Issue Priority System The Uniform Material Movement and Issue Priority System (UMMIPS), OPNAVINST 4614.1, contains information concerning force activity designators (FADs), issue policy designators, requisition processing, delivery dating, mission essential material, abuses and policing of the priority system, and expedited handling of critically needed items. Fleet Use of MILSTRIP The Fleet Use of MILSTRIP, NAVSUPINST 4235.3, is designed to be used for indoctrination 1-20