(2) Maintenance code. Maintenance codes are
assigned to indicate the levels of maintenance
This manual lists repair parts and special tools re-
authorized to USE and REPAIR support items. The
quired for performance of direct support and general
maintenance codes are entered in the third and fourth
support maintenance of the OA-3633/GRC and
positions of the Uniform SMR Code format as follows:
(a) The maintenance code entered in the third
position will indicate the lowest maintenance level
This Repair Parts and Special Tools List is divided into
authorized to remove, replace, and use the support
the following sections:
item. The maintenance code entered in the third posi-
a. Section II, Repair Parts List A list of repair parts
tion will indicate one of the following levels of mainte-
authorized 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
O____Support item is removed, replaced, used at the
composed of functional groups in ascending numerical
sequence, with the parts in each group listed in figure
F____Support item is removed, replaced, used at the
and item number sequence.
direct support level.
b. Section III. Special Tools List Not applicable.
D____Support item that are removed, replaced, used at
c. Section IV National Stock Number and Part
depot, mobile depot, specialized repair activity
Number Index. A list, in ascending National item iden-
tification number (NIIN, last 9 digits) sequence, of all
(b) The maintenance code entered in the fourth
National stock numbers appearing in the listings,
position indicates whether the item is to be repaired
followed by a list, in alphameric sequence, of all part
and identifies the lowest maintenance level with the
numbers appearing in the listings. National stock num-
capability to perform complete repair (i.e., all
ber and part numbers are cross-referenced to each il-
authorized maintenance functions). This position will
lustration figure and item number appearance.
contain one of the following maintenance codes:
3. Explanation of Columns
The following provides an explanation of columns
F_____The lowest maintenance level capable of complete
found in the tabular listings:
repair of the support item is the direct support
a Illustration. This column is divided as follows:
(1) Figure number. Indicates the figure number of
D_____ The lowest maintenance level capable of complete
the illustration in which the item is shown.
repair of the support item is the depot level.
(2) Item number. The number used to identify each
Z-Nonreparable. No repair is authorized.
item called out in the illustration.
(3) Recoverability code. Recoverability codes are
b. Source, Maintenance, and Recoverability Codes
assigned to support items to indicate the disposition ac-
tion on unserviceable items. The recoverability code is
(1) Source code. Source codes are assigned to sup-
entered in the fifth position of the Uniform SMR Code
port items to indicate the manner of acquiring support
format as follows:
items for maintenance, repair, or overhaul of end
items. Source codes are entered in the first and second
positions of the Uniform SMR Cede format as follows:
Z-Nonreparable item. When unserviceable, condemn
and dispose at the level indicated in position 3,
F--Reparable item. When uneconomically reparable,
PA--Item procured and stocked for anticipated or
condemn and dispose at the direct support level.
D____Reparable item. When beyond lower level repair
XD-A support item that is not stocked. When re-
capability, return to depot. Condemnation and
quired, item will be procured through normal
disposal not authorized below depot level.
L_____Reparable item. Repair, condemnation, and dis-
posal not authorized below depot/specialized
Cannibalization or salvage maybe used as a
repair activity level.
source of supply for any items source coded
above except three coded XA, XD, and
c. National Stock Number. Indicates the National
stock number assigned to the item and will be used for
aircraft support items as restricted by AR