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TM 55-4920-412-13&P
APPENDIX C
REPAIR PARTS AND SPECIAL TOOLS LIST
Section I. INTRODUCTION
1. Scope
This manual lists spares and repair parts required for
performance of Aviation Intermediate Maintenance
(AVIM) of the Vertical Instrument Display System Bench
Test Set. It authorizes the requisitioning and issue of
spares and repair parts as Indicated by the source and
maintenance codes.
2. General
This Repair Parts and Special Tools List is divided
into the following sections.
a.
Section II. Repair Parts List. A list of spares
and repair parts authorized for use In the performance of
maintenance Parts are listed In figure and item number
sequence Items are indented when required to indicate
the relationship to the next higher assembly.
b.
Section III. Special Tools List. (Not Applicable).
c.
Section IV. National Stock Number and Part
Number Index. A list, in descending National Item
Identification Number (NIIN) sequence, of all National
Stock
Numbers
(NSN),
or
Management
Control
Numbers (MCN) appearing In the listings, followed by a
list in alphanumeric sequence, of all part numbers
appearing in the listings National Stock Numbers or
Management Control Numbers and part numbers are
cross-referenced to each illustration figure and item
number appearance
3. Explanation of Columns.
a.
Illustration. This column is divided as follows:
(1)
Figure Number. Indicates the figure
number of the illustration in which the Item is shown.
(2)
Item Number. The number used to
identify each item called out In the illustration.
b.
Source, Maintenance, and Recoverability Codes
(SMR).
(1)
Source Code. Source codes are assigned
to support items to indicate the manner of acquiring
support items for maintenance, repair, or overhaul of end
items Source codes are entered in the first and
second positions of the Uniform SMR Code format as
follows:
Code
Definition
PA
--- Item procured and stocked for anticipated or
known usage.
AD
--- Item to be assembled at depot maintenance
level
NOTE
Cannibalization or salvage may be
used as a source of supply for any
items source coded above except
aircraft support items as restricted by
AR 700-42.
(2)
A Maintenance Code. Maintenance codes
are assigned to indicate the levels of maintenance
authorized to USE and REPAIR support items. The
maintenance codes are entered in the third and fourth
positions of the Uniform SMR Code format as follows:
(a)
The maintenance code entered in the third
position will Indicate the lowest maintenance level
authorized to remove, replace, and use the support item
The maintenance code entered in the third position will
indicate the following level of maintenance.
Code
Application/Explanation
F
--- Support item is removed, replaced, used at
the
Aviation
Intermediate
Maintenance
(AVIM) level
(b)
The maintenance code entered in the
fourth position indicates whether the item is to be
repaired and identifies the lowest maintenance level with
the capability to perform complete repair (i e., all
authorized maintenance functions) This position will
contain the following maintenance code.
Code
Application/Explanation
D
--- The lowest maintenance level capable of
complete repair of the support item is the
depot level, performed by depot, mobile
depot or specialized repair activity.
Z
--- Nonreparable No repair is authorized
C-1
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