PART NUMBER COLUMN

T.O. 31W2-4-206-2

TM 11-5805-622-14/1

PART NUMBER COLUMN. This column is

6-11.

SOURCE AND REPAIR C

6-14.

compiled in accordance with the numerical part

number filing system described below.

Policies, general information, and proce-

6-15.

dures for changing source and maintenance coding

a. Part number numerical arrangement starts

are contained in T.O. 00-25-195. Generally, the

in the left-hand column and continues from left to

source codes, and maintenance repair level codes,

right, one column at a time, until part number

herein (see Source Code and Repair Code columns)

numerical arrangement is achieved.

were assigned by Air Force personnel when this

equipment was purchased. Assignment of codes was

b. Beginning with the extreme left hand (first)

influenced by (a) maintenance policies of the Air

position of the Part Number, the order of precedence

Force base self-sufficiency program, (b) predicted

in numerical arrangement is as follows:

maintenance actions, (c) base facilities and capa-

bilities, (d) economic considerations. Definitions

Letters A through Z

of these codes follows:

Numerals 0 through 9

SOURCE CODES. Source Codes are

6-16.

(Alphabetical 0's are

defined as follows:

considered as numerical

zeros).

a. CODE P - PARTS PROCURED AND UNDER

INVENTORY STOCK CONTROL

c. Continuing the part number arrangement, the

order of precedence in the second and succeeding

(1) Code P identifies parts which may be

positions of the part number from left to right is

requisitioned and installed by any level of mainte-

as follows:

ance consistent with the command's authorized

scope of maintenance. Code P is applied to parts

Space (blank column)

on which usage is anticipated or known. Restricted

(emergency) service manufacture of code P items is

Diagonal (slant)/

considered practical but may be accomplished only

after confirmation of nonavailability from supply

Point (period).

sources.

Push (-)

(2) Code PD identifies parts which may be

requisitioned and installed by AF activities author-

ized depot-level maintenance only. Code PD is

Letters A through Z

applied to parts on which usage is anticipated or

known. Restricted (emergency) service manufacture

Numerals 0 through 9

(Alphabetical 0's are

of PD coded parts is considered practicable but

may be accomplished only after confirmation of

considered as numerical

nonavailability from supply sources.

zeros).

6-12.

6-13.

6-20.