T.O.
33A1-3-358-11/TM 11-6625-842-15
Section V
NAVAIR 16-30APM239-2
Paragraphs 5-18 to 5-20
Code "PD" identifies parts which may be requisitioned and installed by AF activities authorized
b.
depot-level maintenance only. Code "PD" is applied to parts on which usage is anticipated or known. Res-
tricted (emergency) service manufacture of code "PD" is considered practical but may be accomplished only
after confirmation of non-availability from supply sources.
c.
Code "P1" identifies parts which may be requisitioned and installed by any maintenance level
consistent with the activity's authorized scope of maintenance. Code "P1" is applied to parts on which usage
is anticipated or known, and which service manufacture is considered impractical.
d.
Code "P1D" identifies parts which may be requisitioned and installed by AF activities authorized
depot-level maintenance only. Code "P1D" is applied to parts on which usage is anticipated or known, and
which service manufacture is considered impractical.
Code "P2" identifies insurance-type spare parts which can be installed by an AF activity con-
e.
sistent with the activity's authorized scope of maintenance. This code is applied to such parts as are basically
structural items of very limited usage, require special tools, templates, and/or jigs, and are very difficult,
impractical, or uneconomical to manufacture by AF activities. These items are not subject to periodic re-
placement or wearout but may require infrequent replacement as a result of accidents or other unexpected
occurrences. Delayed procurement items are included under this code.
f.
Code "P2D" identifies insurance-type parts which may be installed by AF activities which are
authorized depot-level maintenance only. This code is applied to parts as described under code "P2" and to
delayed procurement items.
"M" SERIES - MANUFACTURE, PARTS NOT PROCURED.
5-18.
Code "M" identifies parts, the manufacture and installation of which are within the capabilities of
a.
field maintenance activities; and to which all of the following conditions apply:
Procurement is not justified because of low usage or peculiar storage and installation fac-
1.
tors. Needs are to be met by local manufacture only as required.
Their manufacture does not require tools, equipment or skills not normally authorized at
2.
field maintenance level.
3.
Does not require test equipment not normally authorized at field maintenance level.
Does not require material not nor really available in AF inventory.
4.
Code "M1" identifies parts which can be manufactured at activities authorized depot-level main-
b.
tenance facilities and to which all of the following conditions apply:
Procurement is not justified because of low usage or peculiar storage and installation
1.
factors. The need of base activities are to be met by requisitioning from the geographical AMA, SSM, AMA,
or IM AMA.
2.
Their manufacture is beyond capabilities of field maintenance activities as outlined above.
Their manufacture does not requre tools or equipment not normally authorized at all AMAs.
3.
"A" SERIES - ASSEMBLE, ASSEMBLE NOT PROCURED.
5-19.
a.
Code "A" identifies items capable of being assembled at any level of maintenance and is applied
to assemblies of two or more parts, the majority of which are purchased and/or service manufactured.
b.
Code "A1" identifies assemblies which can be assembled at AF activities authorized, depot-level
maintenance only and is applied to assemblies described under "A" code.
"X" SERIES - PARTS CONSIDERED IMPRACTICAL FOR SERVICE MANUFACTURE.
5-20.
Code "X" is applied to main structural members or similar parts, which, if required, would
a.
suggest extensive repair. The need for a part or parts coded "X" (wing spars, center section structure, etc.)
should normally result in a recommendation to retire the article from service.
b.
Code "X1" identifies parts applicable at any level of maintenance consistent with the activity's
authorized scope of maintenance and for which it is more feasible to obtain the next higher assembly; for
example, an integral detail part such as a welded segment inseparable from its assembly; a part machined in
5-2
