UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT
MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LIST
IMPROVED RIBBON BRIDGE (IRB)
RAMP BAY M16
NSN 5420-01-470-5825 P/N 12478918;
INTERIOR BAY M17
NSN 5420-01-470-5824 P/N 12478919.
This RPSTL lists and authorizes spare and repair parts; special tools; test, measurement, and diagnostic
equipment (TMDE); and other special support equipment required for performance of unit, direct support,
and general support maintenance of the Improved Ribbon Bridge (IRB). It authorizes the requisitioning,
issue, and disposition of spares, repair parts, and special tools as indicated by the source, maintenance,
and recoverability (SMR) codes.
In addition to the Introduction Work Package, this Repair Parts and Special Tools List is divided into the
following work packages:
1. Repair Parts List Work Packages. Work packages list of spare and repair parts authorized by this
RPSTL for use in the performance of maintenance. The list also includes parts which must be removed for
replacement of the authorized parts. Parts lists are composed of functional groups in ascending alpha-
numeric sequence, with the parts in each group listed in ascending figure and item number sequence.
Sending units, brackets, filters, and bolts are listed with the component they mount on. Bulk materials are
listed by item name in FIG BULK at the end of the work package. Repair parts kits are listed separately
in their own functional group and work package. Repair parts for reparable special tools are also listed in a
separate work package. Items listed are shown on the associated illustration(s)/figure(s).
2. Special Tools List Work Packages. Work packages containing lists of special tools, special TMDE,
and special support equipment authorized by this RPSTL (as indicated by Basis of Issue (BOI) information
in DESCRIPTION AND USABLE ON CODE column). Tools that are components of common tool sets
and/or Class VII are not listed.
3. Cross-Reference Indexes Work Packages. There are two cross-reference indexes work packages in
this RPSTL: The National Stock Number (NSN) Index work package and the Part Number (P/N) Index
work package. The National Stock Number Index work package refers you to the figure and item number
appearance. The Part Number Index work package list all part numbers in alphanumeric sequence and
refers you to the figure and item number appearance.