How to Locate Repair Parts - TM-11-6660-219-20P0006

TM 11-6660-219-20P

b. The illustrations in this manual are identical to

c. National Stock Number. Indicates the National

those published in TM 11-6660-219-34P. Only those

stock number assigned to the item and will be used for

parts assigned the third position SMR maintenance

requisitioning purposes.

code "C" or "O" are listed in the tabular listing, there-

d. Part Number. Indicates the primary number

fore, there may be a break in the item number se-

used by the manufacturer (individual, company, firm,

quence. Only illustrations containing organizational

corporation, or Government activity), which controls

authorized items appear in this manual.

the design and characteristics of the item by means of

its engineering drawings, specifications standards, and

inspection requirements, to identify an item or range of

5. How to Locate Repair Parts

items.

a. When National stock number or part number is

NOTE

unknown.

When a stock numbered item is requisitioned,

(1) First. Using the table of contents, determine

the repair part received may have a different

the functional group within which the repair part be-

part number than the part being replaced.

longs. This is necessary since illustrations are prepared

e. Federal Supply Code for Manufaturer (FSCM).

for functional groups and listings are divided into the

The FSCM is a 5-digit numeric code listed in SB 708-42

same groups.

which is used to identify the manufacturer, distributor,

(2) Second. Find the illustration covering the

or Government agency, etc.

functional group to which the repair part belongs.

f. Description. Indicates the Federal item name

(3) Third. Identify the repair part on the illustra-

and, if required, a minimum description to identify the

tion and note the illustration figure and item number of

item.

the repair part.

g. Unit of Measure (U/M). Indicates the standard of

(4) Fourth. Using the Repair Parts Listing, find

the basic quantity of the listed item as used in perform-

the figure and item number noted on the illustration.

ing the actual maintenance function. This measure is

b. When National stock number or part number is

expressed by a two-character alphabetical abbrevia-

known.

tion (e.g., ea, in, pr, etc.). When the unit of measure

(1) First Using the Index of National Stock Num-

differs from the unit of issue, the lowest unit of issue

bers and Part Numbers, find the pertinent National

that will satisfy the required units of measure will be

stock number or part number. This index is in ascend-

requisitioned.

ing NIIN sequence followed by a list of part numbers in

h. Quantity Incorporated in Unit. Indicates the

ascending alphameric sequence, cross-referenced to

quantity of the item used in the breakout shown on the

the illustration figure number and item number.

illustration figure, which is prepared for a functional

(2) Second. After finding the figure and item

group, subfunctional group, or an assembly.

number, locate the figure and item number in the re-

pair parts list.

4. Special Information

a. The following publication pertains to the AN/

GMM-1 and AN/GMM-lA and their components:

6. Abbreviations

TM 11-6660-219-12, Radiosonde Baseline Check Sets

Not applicable.

AN/GMM-l and AN/GMM-lA

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