MIL-DTL-81929C(AS)
(3) Logistically non-repairable support equipment. An illustration, part number,
description of the item and units per assembly shall be listed for these types of end
items.
3.3.4 Parts not to be listed. The following shall not be listed:
a. Assembly detail parts that are permanently joined together. Parts that lose their identity
by being welded or joined to other pieces as a permanent unit. This does not include
riveted items provisioned for the applicable maintenance level of the manual.
b. Items made from bulk stock. Items made from (raw) bulk stock such as lockwire,
bonding braid, upholstery cloth, and friction tape.
c. Structural items. Except in structural repair IPBs, structural items such as stringers,
stiffeners, skin, doublers, and gussets, which serve no purpose in description of parts
relationship or specification of significant procured parts, except when required to
maintain next higher assembly identity or to identify items having maintenance
significance.
d. Detail parts for consumable items. Details of items SM&R coded for throwaway.
e. Substitute item. A substitute item is an item which possesses such functional and
physical characteristics as to be capable of being exchanged for another under specific
conditions or for particular applications and without alteration of the item itself or those
adjoining it. Degradation of equipment performance will result when substitute items are
used. Substitute items shall not be listed, unless authorized by the requiring activity.
3.3.5 Additional coverage requirements.
a. Nuclear hardness critical items (HCI), (CSI) or (OCI). When survivability considerations
are specified and Hardness Critical Items (HCIs) are identified on drawings and parts lists,
the items shall be marked and identified in the description column of the GAPL. All
changes to or proposed substitutions of HCIs shall be evaluated for hardness impacts by
the engineering activity responsible for survivability. The introduction shall include an
explanation of the HCI symbol's usage and method of highlighting and other pertinent
information as necessary to emphasize uniqueness of HCIs.
b. Electrostatic discharge (ESD) sensitive parts. If electronic equipment to be handled,
inspected, repaired or assembled is ESD sensitive, the items shall be marked and
identified in the description column of the GAPL. The introduction shall include an
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