TM 10-5411-232-13&P CARGO BED COVER (CBC) M105A2 TRAILER, TYPE II 0022 00 REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) 2. Part Number (P/N) Index Work Package.  P/Ns in this index are listed in ascending alphanumeric sequence (i.e. vertical arrangement of letter and number combinations which places the first letter or digit of each group in order A through Z, followed by the numbers 0 through 9, and each following letter or digit in like order). PART NUMBER Column.  Indicates the P/N assigned to the item. FIG. Column.  This column lists the number of the figure where the item is identified/located in the repair parts list and special tools list work packages. ITEM Column.  The item number is the number assigned to the item as it appears in the figure referenced in the adjacent figure number column. SPECIAL INFORMATION. None required. HOW TO LOCATE REPAIR PARTS. 1. When NSNs or P/Ns Are Not Known. First.  Using the table of contents, determine the assembly group to which the item belongs.  This is necessary since figures are prepared for assembly groups and subassembly groups, and listings are divided into the same groups. Second. Find the figure covering the functional group or the subfunctional group to which the item belongs. Third.  Identify the item on the figure and note the number(s). Fourth.  Look in the repair parts list for the figure and time numbers.  The NSNs and part numbers are on the same line as the associated item numbers. 2. When NSN is known. First. If you have the NSN, look in the STOCK NUMBER column of the NSN index work package.  The NSN is arranged in NIIN sequence.  Note the figure and item number next to the NSN. Second. Turn to the figure and locate the item number. Verify that the item is the one you are looking for. 3. When P/N is known. First. If you have the P/N and not the NSN, look in the PART NUMBER column of the P/N index work package.  Identify the figure and item number. Second.  Look up the item on the figure in the applicable repair parts list work package. 0022 00-6