HP 4001 Organizational, Ds, Gs, And Depot Maintenance Manual Download Page 42

Page: 42 / 73

TM 11-6625-1514-15

Section VI

Paragraphs 6-13 to 6-15

6-13. REFERENCE DESIGNATION INDEX. The Ref-
erence Designation Index (Section IX) lists electrical
parts by reference designator and is compiled with
reference designators in alpha-numerical order. It
provides a convenient method for locating parts within
the Group Assembly Parts List when the reference
designator is known.

6-14. SOURCE CODING. Source coding as applied to
the Numerical Indexes has been assigned by Department
representatives.

SOURCE CODE DEFINITIONS

a. CODE “’P” - PARTS UNDER INVENTORY STOCK

CONTROL

(1) CODE “P” is applied to the parts which are

procured in view of relatively high usage. Code

“P” parts may be requisitioned and installed

by any maintenance level, unless followed by
the letter - “O”, which restricts requisition
and replacement to Depot (O&R) level only.

Restricted service manufacture is considered

practicable but only after an attempt has been

made to procure from Supply Sources. In lieu

of the procurement of “P” coded parts, the

Department may designate a Depot (O&R) level

activity to manufacture supply requirements
for the Program.

(2) CODE “P1” is applied to parts which are very

difficult or uneconomical to manufacture. Service
manufacture is considered impracticable. Code
“P1” parts may be requisitioned and installed
by any maintenance level, unless followed by the
letter - “O” which restricts the requisition and
replacement to Depot (O&R) level only.

OR STOCKED

b. CODE “M” MANUFACTURE, PARTS NOT PRO-

CURED

(1)

(2)

CODE “M” is applied to parts which are within
the facilities of any activity to manufacture.

Procurement and stocking are not justified in

view of the relatively low usage, or storage
and installation factors, of these parts. Needs
are to be met by local manufacture as required.

CODE “M1” is applied to parts which can be
manufactured only by utilizing the facilities of
the Depot (O&R) activity. Procurement and
stocking of these parts are not justified in view
of their relatively low usage and installation
factors. The needs of all activities are to be
met through salvage, or by Depot (O&R) level
manufacture.

c. CODE “A” ASSEMBLE - ASSEMBLY NOT PRO-

CURED

(1) CODE “A” is applied to assemblies made up of

two or more units each of which carry individual
part numbers and descriptions, and which may be
assembled by any maintenance level.

6-2

(2) CODE “A1” is applied to assemblies made up of

two or more parts each of which carry individual
part numbers and description, and which may be
assembled only by activities having Depot (O&R)
facilities.

d. CODE “X” PARTS CONSIDERED IMPRACTICABLE

FOR MANUFACTURE OR PROCUREMENT

(1)

(2)

(3)

CODE “X” is applied to the Main Structural
Members or similar parts which, if required,
would suggest extensive aircraft or equipment
reconditioning.

The need of a part, or parts,

coded “X” (wing spar caps, center section struc-

ture) should normally result in a recommendation
to retire the aircraft or equipment from Service.

CODE “X1” is applied to parts for which the
procurement of the next larger assembly is

justified; e.g., an integral detail part, such as
welded segments, inseparable from its assembly;

a part machined in a matched set; or a part of
an assembly which, if required, would suggest
extensive reconditioning of each assembly.

CODE “X2” is applied to parts which are neither

procured nor stocked. Activities requiring
such parts shall attempt to obtain from salvage;
if not obtainable from salvage, such parts shall
be requisitioned through normal supply channels
with supporting justification.

e. CODE * PARTS NOT PROCURED, MANUFACTURED

(1) CODE * applies to installation drawings, diagrams,

instructions or field service drawings, basic
drawing numbers which cannot be procured or
manufactured, and obsolete parts.

6-15. VENDOR’S CODE. Vendor’s code numbers have
been assigned in accordance with Federal apply Code
H-4-1. The vendor’s code appears in parentheses fol-
lowing the item name or within the description of each

item in the Group Assembly Parts List (Section VII).
The vendor’s codes used in this Illustrated Parts Break-
down are listed below for convenience.

CODE

04009

14655

14674

19701

24446

VENDOR’S CODE

NAME AND ADDRESS

Arrow, Hart, and Hegeman Electric Co.,
Hartford, Corm.

Cornell Dubilier Electric Corp.,

South Plainfield, N.J.