This manual lists and authorizes spares and repair parts; special tools; special test, measurement, and diagnostic
equipment (TMDE); and other special support equipment required for performance of organizational, direct sup-
port, and general support maintenance of the OS-261B(V)1/U and the OS-261C(V)1/U. It authorizes the requisi-
tioning, issue, and disposition of spares, repair parts and special tools as indicated by the source, maintenance and
recoverability (SMR) codes.
This Repair Parts and Special Tools List is divided into the following sections:
a. Section II. Repair Parts List.
of spares and repair parts authorized
by this RPSTL for use
in the perfor-
mance 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 numeric sequence, with the parts in each group listed in
ascending item number sequence. Figure numbers are listed directly beneath the group header.
b. Section III. Special Tools List. Not applicable.
c. Section IV. National Stock Number and Part Number Index.
in National item identification number
(NIIN) sequence, of all National stock numbered items appearing in the listing, followed by a list in alphameric se-
quence of all part numbers appearing in the listings. National stock numbers and part numbers are cross-refer-
enced to each illustration figure and item number appearance.
a. Item No. (Column (1)). Indicates the number used to identify items called out in the illustration.
b. SMR Code (Column (2)). The source, maintenance, and recoverability (SMR) code is a five-position code con-
taining supply/requisitioning information, maintenance category authorization criteria, and disposition instruc-
tion, as shown in the following breakout:
How you get an item.
on an unserviceable
Who can install,
Who can do
replace or use
(see note) on
Complete repair: Maintenance capacity, capability, and authority to perform all correc-
tive maintenance tasks of the "Repair" function in a use/user environment in order to
restore serviceability to a failed item.
(1) Source code. The source code tells you how to get an item needed for maintenance, repair, or overhaul of an
end item/equipment. Explanations of source codes follows: