PART NUMBER INDEX. The Part Number Index has three columns as follows:
PART NUMBER Column. Contains the part number assigned to the item.
FIG. Column. Contains the number of the figure where the item is identified/located.
ITEM Column. Contains the item number associated with the figure number in the adjacent column.
C-4. SPECIAL INFORMATION
a. Usable On Code. A usable on code (UOC) is assigned to each different model of an end item. The usable on code is
shown as "UOC: ", justified left on the last line of the description column, when required. Uncoded items are applicable
to all models. Identification of usable on codes used in this RPSTL are:
Illustrations-Listings. Only illustrations containing organizational authorized items appear in this appendix. Only
those parts assigned the third position SMR maintenance code C or 0 are listed in the tabular listing: therefore, there may
be a break In the item number sequence.
C-5. HOW TO LOCATE REPAIR PARTS
When National Stock Number or part Number is Unknown.
Using the Table of Contents, determine the assembly or subassembly group to which the item belongs.
Find the figure covering the functional group to which the item belongs.
Identify the item on the figure and note the number of the item.
Look up the Repair Parts List for the figure and item number. The NSN and part number is on the same
line as the item number.
When National Stock Number or Part Number is Known.
Using the Index of National Stock Numbers and Part Numbers, find the pertinent National stock number or
part number. The NSN index is in NIIN sequence. The part number index is in alphanumeric sequence, cross-
referenced to the Illustration figure number and item number.
Turn to the figure and locate the item number. Verify that the item is the one desired.