PB Item procured and stocked for insurance pur-
This manual lists spares and repair parts; special
pose because essentiality dictates that a
tools; special test, measurement, and diagnostic
minimum quantity be available in the sup-
equipment (TMDE), and other special support equip-
ment required for performance of organizational, di-
XA Item is not procured or stocked because the
rect support, and general support maintenance of
requirements for the item will result in the
Test Set, AN/PTM-7. It authorizes the requisition-
replacement of the next higher assembly.
ing and issue of spares and repair parts as indicated
XB Item is not procured or stocked. If not availa-
by the source and maintenance codes.
ble through salvage, requisition.
This Repair Parts and Special Tools List is divided
Cannibalization or salvage may be used as
into the following sections:
a source of supply for any items source
a. Section II. Repair Parts List. A list of spares
coded above except those coded XA and
and repair parts authorized for use in the perform-
aircraft support item as restricted by AR
ance of maintenance. The list also includes parts
which must be removed for replacement of the au-
(2) Maintenance code. Maintenance codes are
thorized parts. Parts lists are composed of functional
assigned to indicate the levels of maintenance au-
groups in numeric sequence, with the parts in each
thorized to USE and REPAIR support items. The
group listed in figure and item number sequence.
maintenance codes are entered in the third and
b. Section III. Special Tools List. Not applicable.
fourth positions of the Uniform SMR Code format as
c. Section IV. National Stock Number and Part
Number Index. A list, in National item identification
(a) The maintenance code entered in the third
number (NIIN) sequence, of all National stock num-
position will indicate the lowest maintenance level
bers (NSN) appearing in the listings, followed by a
authorized to remove, replace, and use the support
list, in alphanumeric sequence, of all part numbers ap-
item. The maintenance code entered in the third posi-
pearing in the listings. National stock numbers and
tion will indicate one of the following levels of mainte-
part numbers are cross-referenced to each illustra-
tion figure and item number appearance.
3. Explanation of Columns
O Support item is removed, replaced, used at the
a. Illustration. This column is divided as follows:
(1) Figure number. Indicates the figure number
H Support item is removed, replaced, used at the
of the illustration on which the item is shown.
general support level.
(2) Item number. The number used to identify
(b) The maintenance code entered in the fourth
item called out in the illustration.
positions indicates whether the item is to be repaired
b. Source Maintenance, and Recoverability (SMR)
and identifies the lowest maintenance level with the
capability to perform complete repair (i.e., all author-
(1) Source code. Source codes indicate the man-
ized maintenance functions). This position will con-
ner of acquiring support items for maintenance, re-
tain one of the following maintenance codes:
pair, or overhaul of end items. Source codes are en-
tered in the first and second positions of the Uniform
SMR Code format as follows:
F The lowest maintenance level capable of com-
plete repair of the support item is the direct
PA Item procured and stocked for anticipated or