Section I. INTRODUCTION - TM-11-5820-489-20P0005

TM 11-5820-489-20P

SECTION I

INTRODUCTION

1. Scope

NOTE

Cannibalization or salvage may be used

This manual lists spares and repair parts; special

as a source of supply for any items source

tools; special test, measurement, and diagnostic

coded above except those coded XA and

equipment (TMDE), and other special support

aircraft support items as restricted by AR

equipment required for performance of organiza-

700-42

tional maintenance of the AN/GRA-6. It au-

(2) Maintenance code. Maintenance codes are

thorizes the requisitioning and issue of spares and

assigned to indicate the levels of maintenance au-

repair parts as indicated by the source and main-

thorized to USE and REPAIR support items. The

tenance codes.

maintenance codes are entered in the third and

2. General

fourth positions of the Uniform SMR Code format

as follows:

This Repair Parts and Special Tools List is divided

(a) The maintenance code entered in the

into the following sections:

third position will indicate the lowest maintenance

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

level authorized to remove, replace, and use the

and repair parts authorized for use in performance

support item. The maintenance code entered in the

of maintenance. The list also includes parts which

third position will indicate the following level of

must be removed for replacement of the au-

maintenance:

thorized parts. Parts lists are composed of func-

Code

Application/Explanation

tional groups in numeric sequence, with the parts

O--

Support item is removed, replaced, used at

in each group listed in figure and item number

the organizational level.

sequence.

(b) The maintenance code entered in the

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

fourth position indicates whether the item is to be

c. Section IV. National Stock Number and Part

repaired and identifies the lowest maintenance

Number Index. A list, in National item identifica-

level with the capability to perform complete re-

tion number (NIIN) sequence, of all National stock

pair (i.e., all authorized maintenance functions).

numbers (NSN) appearing in the listings, followed

This position will contain one of the following

by a list, in alphameric sequence, of all part num-

maintenance codes:

bers appearing in the listings. National stock

Code

Application/Explanation

numbers and part numbers are cross-referenced to

F--

The lowest maintenance level capable of

each illustration figure and item number appear-

complete repair of the support item is the

ance.

direct support level.

Z--

Nonreparable. No repair is authorized.

3. Explanation of Columns

(3) Recoverability code. Recoverability

codes

a. Illustration. This column is divided as follows:

are assigned to support items to indicate the

dispo-

(1) Figure number. Indicates the figure

sition action on unserviceable items. The

recov-

number of the illustration on which the item is

erability code is entered in the fifth position

of the

shown.

Uniform SMR Code format as follows:

(2) Item number. The number used to identify

item called out in the illustration.

Recoverability

Definition

codes

b. Source, Maintenance, and Recoverability

Z--

Nonreparable item. When unserviceable,

(SMR) Codes.

condemn and dispose at the level indi-

(1) Source code. Source codes indicate the

cated in position 3.

manner of acquiring support items for mainte-

F--

Reparable item. When uneconomically re-

nance, repair, or overhaul of end items. Source

parable, condemn and dispose at the di-

codes are entered in the first and second positions

rect support level.

of the Uniform SMR code format as follows:

c. National Stock Number. Indicates the Na-

Definition

Code

PA -- Item procured and stocked for anticipated

tional stock number assigned to the item and will

or known usage.

be used for requisitioning purposes.