SECTION I INTRODUCTION - TM-11-5895-687-34P-30005

TM 11-5895-687-34P-3

SECTION I

INTRODUCTION

Code

Definition

1. Scope

This manual lists spares and repair parts; special

PA Item procured and stocked for anticipated or

known usage.

tools; special test, measurement, and diagnostic

equipment (TMDE), and other special support

XA Item is not procured or stocked because the

requirements for the item will result in the

equipment required for performance of direct

support maintenance of the SN-421/TPX-50. It

replacement of the next higher assembly.

authorize the requisitioning and issue of spares

XD A support item that is not stocked. When

and repair parts as indicated by the source and

required, item will be procured through

maintenancs codes.

normal supply channels.

2. General

NOTE

This Repair Parts and Special Tools List is divided

Cannibalization or salvage maybe used as a

into the following sections:

source of supply for any items source coded

a. Section II. Repair Parts List. A list of

above except those coded XA and aircraft

spares and repair parts authorized for use in the

support items as restricted by AR 700-42.

performance of maintenance. The list also includes

(2) Maintenance code. Maintenance codes are

parts which must be removed for replacement of

assigned to indicate the levels of maintenance

the authorized parts. Parts lists are composed of

authorized to USE and REPAIR support items.

fictional groups in numeric sequence, with the

The maintenance codes are entered in the third and

parts in each group listed in figure and item

fourth positions of the Uniform SMR Code format

number sequence.

as follows:

b. Section III. Special Tools List. Not ap-

(a) The maintenance code entered in the

plicable.

third position will indicate the lowest maintenance

c. Section IV, National Stock Number and

level authorized to remove, replace, and use the

Part Number Index. A list, in National item

support item. The maintenance code entered in the

identification number (NIIN) sequence, of all

third position will indicate one of the following

National stock numbers (NSN) appearing in the

levels of maintenance:

listings, followed by a list, in alphameric sequence,

Application/Explanation

Code

of all part numbers appearing in the listings.

OSupport item is removed, replaced, used at the

National stock numbers and part numbers are

organizational level.

cross-referenced to each illustration figure and item

FSupport item is removed, replaced, used at the

number appearance.

direct support level.

3. Explanation of Columns

D Support items that are removed, replaced,

a. Illustration This column is divided as

used at depot, mobile depot, specialized

follows:

repair activity only.

(1) Figure number. Indicates the figure

(b) The maintenance code entered in the

number of the illustration on which the item is

fourth position indicates whether the item is to be

shown.

repaired and identifies the lowest maintenance level

(2) Item number. The number used to

with the capability to perform complete repair (i.e.,

identify item called out in the illustration.

all authorized maintenance functions). This

b. Source, Maintenance, and Recoverability

position will contain one of the following main-

(SMR) Codes.

tenance codes:

(1) Source code. Source codes indicate the

manner of acquiring support items for main-

Code

Application/Explanation

tenance, repair, or overhaul of end items. Source

F-The lowest maintenance level capable of

codes are entered in the first and second positions

complete repair of the support item is the

of the Uniform SMR Code format as follows:

direct support level.