XD A support item that is not stocked. When
This manual lists repair parts and special tools
r e q u i r e d , item will be procured through
r e q u i r e d for performance of direct support and
normal supply channels.
general support maintenance of TH-22/TG.
Cannibalization or salvage may be used as
This Repair Parts and Special Tools List is divided
a source of supply for any items source
into the following sections:
coded above except those coded XA, XD,
a. Section II. Repair Parts List. A list of repair
and aircraft support items as restricted by
p a r t s authorized for use in the performance of
m a i n t e n a n c e , The list also includes parts which
(2) Maintenance code. Maintenance codes are
must be removed for replacement of the authorized
a s s i g n e d to indicate the levels of maintenance
p a r t s . Parts lists are composed of functional
a u t h o r i z e d to USE and REPAIR support items.
groups in ascending numerical sequence, with the
The maintenance codes are entered in the third and
p a r t s in each group listed in figure and item
fourth positions of the Uniform SMR Code format
b. Section III. Special Tools List. N o t a p -
(a) The maintenance code entered in the
third position will indicate the lowest maintenance
c. Section IV. National Stock Number and Part
level authorized to remove, replace, and use the
Number Index. A list, in ascending National item
support item. The maintenance code entered in the
identification number (NIIN, last 9 digits)
third position will indicate one of the following
sequence, of all National stock numbers appearing
levels of maintenance:
in the listings, followed by a list, in alphameric
s e q u e n c e , of all part numbers appearing in the
O Support item is removed, replaced, used at the
listings. National stock number and part numbers
are cross-referenced to each illustration figure and
F Support item is removed, replaced, used at the
item number appearance.
direct support level.
H Support item is removed, replaced, used at the
3. Explanation of Columns
general support level.
The following provides an explanation of columns
(b) The maintenance code entered in the
found in the tabular listings:
fourth position indicates whether the item is to be
a. Illustration. This column is divided as
repaired and identifies the lowest maintenance level
with the capability to perform complete repair (i.e.,
(1) F i g u r e n u m b e r . Indicates the figure
all authorized maintenance functions). This
n u m b e r of the illustration in which the item is
position will contain one of the following main-
(2) I t e m n u m b e r . T h e n u m b e r u s e d t o
identify each item called out in the illustration.
H The lowest maintenance level capable of
b. Source, Maintenance,
a n d Recoverability
complete repair of the support item is the
general support level.
(1) Source code. Source codes are assigned to
Z Nonreparable. No repair is authorized.
support items to indicate the manner of acquiring
(3) Recoverability code. Recoverability codes
support items for maintenance, repair, or overhaul
a r e assigned to support items to indicate the
of end items. Source codes are entered in the first
d i s p o s i t i o n action on unserviceable items. The
and second positions of the Uniform SMR Code
recoverability code is entered in the fifth position
format as follows:
of the Uniform SMR Code format as follows:
PA Item procured and stocked for anticipated or
Z Nonreparable item. When unserviceable,
XA Item is not procured or stocked because the
condemn and dispose at the level indicated
r e q u i r e m e n t s for item will result in the
in position 3.
replacement of the next higher assembly.