ILLUSTRATED PARTS BREAKDOWN (IPB)

2-19. With the possible exception of maintenance, the subjects are self-explanatory. The maintenance volumes contain step-by-step procedures for the removal and installation of components within the system covered by the particular volume. Part V of the manual number code is a subvolume number of the subject designated in part IV. In the case of F- 14 manuals, -1 in part V is used for landing system; for example, NAVAIR 01-F14AAA-2-2-1 is Landing Systems, Principles of Operation; NAVAIR 01-F14AAA-2-3-1 is Landing Systems, Testing and Troubleshooting; and NAVAIR 01-F14AAA-2-4-1 is Landing Systems Maintenance. To provide smaller information units, the MIMs are sectionalized into work packages (WPs) and, if necessary, into subordinate work packages (SWPs). WPs and SWPs are identified by a five-digit number. The first three digits represent the WP number, and the last two digits represent the SWP number. NOTE: The two digits that identify the SWP are usually printed in smaller size type than the three digits that identify the WP. Figure 2-20 is an example of page A of a testing and troubleshooting MIM. It contains the numerical index of the effective WPs and SWPs in the volume. WP 00 1 00 contains an alphabetical listing of all WPs and SWPs in the volume. ILLUSTRATED PARTS BREAKDOWN (IPB) Normally, the IPB consists of several individual volumes; one for each functional element of the aircraft and one volume that is the Master Parts Index. Each volume pertaining to the different functional elements is identified by a dash and number in part IV of the publications number. For example, the Master Parts Index for the F-14A aircraft is NAVAIR 01-F14AAA-4, and the IPB volume for the landing systems is NAVAIR 01-F14AAA-4-1. The IPB is useful in identifying and ordering parts. You can determine the exact part or item required for replacement in a repair situation. Figure 2-21 is a typical IPB diagram. It can be used to identify failed or worn parts. To do this, identify the part by locating it on the diagram (i.e., you decide number 6 is the failed component). You can take this number, called the index number, and locate it (a launch bar) on the part list (fig. 2-22). This information in the part list is vital in ordering the part. The IPB contains a list of weapons systems component parts keyed to simple illustrations. The manual serves a dual function to assist maintenance and supply. Material is illustrated by an exploded view and identified to material availability through source code listings. It is prepared as an associate manual to the related maintenance manual or incorporated in the basic book as a separate section. NAVAL AERONAUTIC PUBLICATIONS INDEX (NAPI) All aeronautic publications, changes, technical directives, and forms issued by NAVAIRSYSCOM are cataloged in the Naval Aeronautic Publications Index (NAPI). The NAP1 consists of six sections, Figure 2-19.—Example of F-14 MIM number codes. 2-20