TM 3-4240-212-14&P
APPENDIX B
BASIC ISSUE ITEMS LIST, ITEMS TROOP INSTALLED OR AUTHORIZED
LIST, ORGANIZATIONAL, AND DIRECT SUPPORT MAINTENANCE REPAIR
PARTS AND SPECIAL TOOLS LIST
Section I. INTRODUCTION
NOTE
B-1.
Scope
Cannibalization or salvage may be used as a
This appendix lists basic Issue items, Items troop installed
source of supply for any items source coded
or authorized, and repair parts required for performance
above.
of organizational and direct support maintenance of the
(2)
Maintenance code. Maintenance codes
M20 breathing apparatus.
are assigned to indicate the levels of maintenance
B-2.
General
authorized to USE and REPAIR support Items. The
This Basic Issue Items, Items Troop Installed or
maintenance codes are entered in the third and fourth
Authorized, and Repair Parts List is divided into the
positions of the Uniform SMR Code format as follows:
following sections
(a) The maintenance code entered In the
a. Section II-- Basic Issue Items List. Not Ap-
third position will Indicate the lowest maintenance level
plicable.
authorized to remove, replace, and use the support item.
The maintenance code entered In the third position will
List. A list, in alphabetical sequence, of Items which, at
indicate one of the following levels of maintenance:
the discretion of the unit commander, may accompany
Code
Application/explanation
the end Item, but should not be turned in with the end
C-- Crew or operator maintenance performed with
item.
organizational maintenance
O-- Support Item IS removed, replaced, used at the
parts authorized for use in the performance of
organizational level
maintenance. Parts lists are composed of functional
F-- Support Item IS removed, replaced, used at the direct
groups in ascending numerical sequence, with the parts In
support level
each group tasted In figure and item number sequence.
(b) The maintenance code entered in the
d. Section V-- Special Tools List. Not Applicable
fourth position Indicates whether the Item Is to be
repaired and identifies the lowest maintenance level with
Number Index A hat, In ascending numerical sequence, of
the capability to perform complete repair (i.e., all
all National stock numbers appearing in the listings,
authorized maintenance functions) This position will
followed by a list, In alphameric sequence, of all part
contain one of the following maintenance codes:
numbers appearing In the tastings.
National stock
Code
Application/explanation
number and part numbers are cross-referenced to each
O-- The lowest maintenance level capable of complete
illustration figure and Item number.
repair of the support Item IS the organizational
B-3.
Explanation of Columns
level
The following provides an explanation of columns found
F-- The lowest maintenance level capable of complete
in the tabular listing:
repair of the support Item Is the direct support
a. Illustration. This column Is divided as follows:
level
(1)
Figure number.
Indicates the figure
Z-- Non reparable No repair is authorized.
number of the Illustration In which the item is shown.
(3)
Recoverability code.
Recoverability
(2)
Item number.
The number used to
codes are assigned to support Items to Indicate the
identify each Item called out In the Illustration.
disposition action on unserviceable items.
The
b. Source, Maintenance, and Recoverability Codes
recoverability code is entered In the fifth position of the
(SMR)
Uniform SMR code format as follows:
(1)
Source code. Source codes are assigned
Recoverability
to support Items to indicate the manner of acquiring
codes
Definition
support items for maintenance, repair, or overhaul of end
Z-- Nonreparable Item When serviceable, condemn and
Items. Source codes are entered m the first and second
dispose at the level indicated in position 3
positions of the Uniform SMR Code format as follows:
c. National Stock Number. Indicates the National
Code
Definition
stock number assigned to the item and will be used for
PA-- Item procured and stocked for abated or known
requisitioning purposes.
usage
d. Part Number Indicates the primary number used
XB-- Item is not procured or stocked If not available
by the manufacturer (individual, company, firm,
through salvage, requisition
corporation, or Government activity), which controls the
design and characteristics of the item by means of its
engineering drawings, specifications standards, and in
Change 2
B-1