item will be procured through normal supply
This manual lists spares and repair parts; special tools;
special test, measurement, and diagnostic equipment
(TMDE), and other special support equipment required
Cannibalization or salvage may be used as a
for performance of direct support and general support
source of supply for any items source coded
maintenance of the PP-7274B/A. It authorizes the requi-
above except those coded XA and aircraft sup-
sitioning and issue of spares and repair parts as indicated
port items as restricted by AR 700-42.
by the source and maintenance codes.
(2) M a i n t e n a n c e c o d e . M a i n t e n a n c e c o d e s a r e
assigned to indicate the levels of maintenance authorized
This Repair Parts and Special Tools List is divided into the
to USE and REPAIR support items. The maintenance
codes are entered in the third and fourth positions of the
a. Section II. Repair Parts List. A list of spares and
Uniform SMR Code format as follows:
repair parts authorized for use in the performance of
(a) The maintenance code entered in the third
maintenance. The list also includes parts which must be
p o s i t i o n will indicate the lowest maintenance level
removed for replacement of the authorized parts. Parts
authorized to remove, replace, and use the support item.
lists are composed of functional groups in numeric se-
The maintenance code entered in the third position will
quence, with the parts in each group listed in figure and
indicate one of the following levels of maintenance:
item number sequence.
b. Section III. Special Tools List. Not applicable.
H - Support item is removed, replaced, used at the
c. Section IV. National Stock Number and Part Num-
general support level.
ber Index. A list, in National item identification number
(b) The maintenance code entered in the fourth
(NIIN) sequence, of all National stock numbers (NSN)
position indicates whether the item is to be repaired and
appearing in the listings, followed by a list, in alphameric
identifies the lowest maintenance level with the capability
sequence, of all part numbers appearing in the listings.
to perform complete repair (i.e., all authorized mainte-
National stock numbers and part numbers are cross-
nance functions). This position will contain one of the
referenced to each illustration figure and item number ap-
following maintenance codes:
H - The lowest maintenance level capable of complete
repair of the support item is the general support
a. Illustration. This column is divided as follows:
(1) Figure number. Indicates the figure number of
Z - Nonreparable. No repair is authorized.
the illustration on which the item is shown.
(3) Recoverability code. Recoverability codes are
(2) Item number. The number used to identify item
assigned to support items to indicate the disposition action
called out in the illustration.
on unserviceable items. The recoverability code is entered
b. Source, Maintenance, and Recoverability (SMR)
in the fifth position of the Uniform SMR Code format as
(1) Source code. Source codes indicate the manner
of acquiring support items for maintenance, repair, or
overhaul of end items. Source codes are entered in the
Z - Nonreparable item. When unserviceable, condemn
first and second positions of the Uniform SMR Code for-
and dispose at the level indicated in position 3.
mat as follows:
H - Reparable item, When uneconomically reparable,
condemn and dispose at the general support
PA - Item procured and stocked for anticipated or known
D - Reparable item. When beyond lower level repair
AH - Item to be assembled at general support mainte-
capability, return to depot. Condemnation and
disposal not authorized below depot level.
c. National Stock Number. Indicates the National stock
XA - Item is not procured or stocked because the re-
number assigned to the item and will be used for requisi-
quirements for the item will result in the replace-
ment of the next higher assembly.
d. Part Number. Indicates the primary number used by
XB - Item is not procured or stocked. If not available
the manufacturer (individual, company, firm, corpora-
through salvage, requisition.
tion, or Government activity), which controls the design
XD - A support item that is not stocked. When required,