SECTION I. INTRODUCTION - TM-11-5820-520-20P-10005

TM 11-5820-520-20P-1

SECTION I

INTRODUCTION

1. Scope

(2) Maintenance code. Maintenance codes are

assigned to indicate the levels of maintenance

This manual lists spares and repair parts; special tools;

authorized to USE and REPAIR support items. The

special test, measurement, and diagnostic equipment

maintenance codes are entered in the third and fourth

(TMDE), and other special support equipment required

for performance of organizational maintenance of the

pasitions of the Uniform SMR Code format as follows:

(a) The maintenance code entered in the third

AN/GRC-106. It authorizes the requisitioning and issue

position will indicate the lowest maintenance level

of spares and repair parts as indicated by the source

authorized to remove, replace, and use the support

and maintenance codes.

item. The maintenance code entered in the third posi-

2. General

tion will indicate one of the following levels of mainte-

This Repair Parts and Special Tools List is divided into

nance:

the following sections:

Code

Application/Explanation

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

O - Support item is removed, replaced, used at the

repair parts authorized for use in the performance of

organizational level.

maintenance. The list also includes parts which must

(b) The maintenance code entered in the fourth

be removed for replacement of the authorized parts.

position indicates whether the item is to be repaired

Parts lists are composed of functional groups in

and identifies the lowest maintenance level with the

numeric sequence, with the parts in each group listed

capability to perform complete repair (i.e., all

in figure and item number sequence.

authorized maintenance functions). This position will

b. Section III. Special Tools List. Not applicable.

contain one of the following maintenance codes:

c. Section IV. National Stock Number and Part

Code

Application/Explanation

Number Index. A list, in National item identification

H - The lowest maintenance level capable of com-

number (NIIN) sequence, of all National stock numbers

plete repair of the support item is the general

(NSN) appearing in the listings, followed by a list, in

support level.

alphameric sequence, of all part numbers appearing in

D - The lowest maintenance level capable of com-

the listings. National stock numbers and part numbers

plete repair of the support item is the depot

are cross-referenced to each illustration figure and

level.

item number appearance.

Z - Nonreparable. No repair is authorized.

3. Explanation of Columns

(3) Recoverability code. Recoverability codes are

a. Illustration. This column is divided as follows:

assigned to support items to indicate the disposition ac-

(1) Figure number. Indicates the figure number of

tion on unserviceable items. The recoverability code is

the illustration on which the item is shown.

entered in the fifth position of the Uniform SMR Code

(2) Item number. The number used to identify

format as follows:

item called out in the illustration.

Recoverability

b. Source, Maintenance, and Recoverability (SMR)

Codes

Definition

Codes.

Z - Nonreparable item. When unserviceable, con-

(1) Source code. Source codes indicate the manner

demn and dispose at the level indicated in posi-

of acquiring support items for maintenance, repair, or

tion 3.

overhaul of end items. Source codes are entered in the

H - Reparable item. When uneconomically reparable,

first and second positions of the Uniform SMR Code

condemn and dispose at the general support

format as follows:

level.

D - Reparable item. When beyond lower level repair

Definition

Code

PA - Item procured and stocked for anticipated or

capability, return to depot. Condemnation and

known usage.

disposal not authorized below depot level.

XD - A support item that is not stocked. When re-

c. Nationul Stock Number. Indicates the National

quired, item will be procured through normal

stock number assigned to the item and will be used for

supply channels.

requisitioning purposes.

NOTE

d. Part Number. Indicates the primary number used

by the manufacturer (individual, company, firm, cor-

Cannibalization or salvage may be used as a

poration, or Government activity), which controls the

source of supply for any items source coded

above except those coded XA and aircraft

design and characteristics of the item by means of its

engineering drawings, specifications, standards, and

support items as restricted by AR 700-42.