Table 3-1.—Description of Contents of Columns of COSAL Index

Table 3-1.—Description of Contents of Columns of COSAL Index 1. Equipment/Component Military Essentiality Code 2. Equipment/Component/Equipage Nomenclature/Characteristics 3. Identification Number 4. Quantity 5. Column Number 6. Notes 7. Allowance Support Code 8. Service Application/Information 9. Ship Type and Hull Number 10. Date 11. Allowance Support Codes 12. Page *Refer to Figure 3-2. Indicates those items of equipment that are essential to the ship’s mission. V - Vital. Failure of the equipment could reduce the ship’s capability to perform its mission. NV - Nonvital. Failure of the equipment would not adversely affect the ship’s mission. The noun name and partial characteristic description of each APL and AEL. The APL or AEL identification number. The quantity of each equipment/component per service aboard ship, covered by the applicable APL. Column 4 will be blank for all AELs. The applicable AEL column number from which the allowance is determined. This column is blank for all APLs. A code that indicates specific information about an APL/AEL entry. These codes are listed and defined in the Introduc- tion. Reserved for future use. (See item 11.) The service or major shipboard function in which the equip- ment/component/equipage operates or performs a service. The specific ship for which the COSAL is prepared. Date of preparation (may be expressed as Julian or month- day-year date). Pertains to item 7. Consecutive page numbering from first page to last. Page numbers preceded by “H” apply to Hull, Mechanical and Electrical (Example H-1). Page numbers preceded by “Z” apply to Ordnance(Example Z-1). PART I-COSAL INDEX.- The Index identifies the APLs and AELs associated with the ship’s equipment. It also provides other information, such as the code of the work center responsible for the maintenance and various maintenance-related codes. The index is published in five parts, sections A through E. Sections A and B provide a cross-index of all APL/AELs listed in Part II. They contain the same information, but in two slightly different formats. Figure 3-2 shows both the A and B indexes. All areas of information are in the same relative positions, except that column 8 in Section A listings shifts over to become column 1 in section B listings. The bulk of the information you will need to repair an item covered by COSAL is contained on the appropriate APL or AEL. To identify the appropriate APL or AEL, you will need to look up either the name of the equipment in Section A or the use of that equipment infection B. Table 3-1 describes the uses of the Index columns and is keyed to the numbers shown in figure 3-2. 3-5