Allowance Lists
each model aircraft, engine accessory, electronic
equipment, or support equipment (SE). It is printed
The allowance lists (ALs) contain material and
and issued by the authority of NAVAIR. The IPB is
equipment for the purposes indicated in each list. The
designed to allow supply and maintenance personnel
ALs are used as guides in establishing the Individual
to identify and requisition replacement parts for
Material Readiness Lists (IMRLs). The contents of
aircraft or equipment. All procurable assemblies with
ALs include the equipment and material (both
detailed parts are illustrated and listed in such a
consumable and repairable) necessary to outfit and
manner as to make possible quick identification of
maintain units of the aeronautical organization. The
assemblies and their component parts. The items are
A L s a l s o i d e n t i f y i t e m s u s e d w i t h s u ffi c i e n t
arranged continuously in assembly breakdown order
frequency to justify their issuance to all activities
with the illustrations placed as near as possible to
maintaining aircraft or equipment for which the lists
their appropriate listing.
are designed, and information concerning NSN,
nomenclature, interchangeability, and superseded
Technical Directives
NSNs. The ALs provide detailed instructions for the
application and use of each publication, as well as a
Supply personnel will often be required to
table of logistic data showing the total weight and
prepare or process requisitions for component parts
cube of all material contained in the list.
required for incorporation of technical directives
(TDs). Therefore, it is necessary to understand the
Tables of Basic Allowances
different types, titles, categories, arrangement, and
locations of applicable supply data included in them.
The tables of basic allowances (TBAs) are listings
A TD may direct that component parts or material be
of equipment and material required for performance
added, removed, changed, altered, relocated, or
o f s p e c i fi c m i s s i o n s , T h ey c o n t a i n b o t h s h o p
r e p o s i t i o n e d . N AVA I R h a s m a n a g e m e n t
equipment and common supporting spare parts and
responsibility for the configuration management
include allowances of tools and material required for
program. This program was established to control and
the use of such activities as fleet marine force (FMF)
track modifications to aeronautical equipment using
squadrons, guided missile activities, and drone-type
the TD system. Specific information concerning the
activities.
TD program is in NAVAIRINST 5218.8. Additional
information concerning TD compliance at the O-, and
TECHNICAL MANUALS
I-, and D-levels, documentation procedures, and
Technical manuals normally contain a listing of
reporting requirements may be found in volumes II,
parts and drawings of the parts for identification
III, and IV of Naval Aviation Maintenance Program
purposes. The parts lists normally identify the
(NAMP), OPNAVINST 4790.2.
manufacturer, manufacturer's part number, and NSN
There are two types of TDs, formal and informal,
(if one is assigned).
which are distinguished by their method of
The Naval Sea Systems Command Technical
dissemination. They are normally distributed as
Manual is usually kept in the engineering department
technical notes/orders, bulletins, or changes. There
as it pertains primarily to engineering matters. You
are three action categories of TDs: immediate, urgent,
will refer to it occasionally for technical data on:
and routine. These categories are important to the SK
because they determine the priority on which the TD
Material
kits/parts may be requisitioned. These categories are
Preservation of supply spaces
as follows:
Safety precautions in stowing safe, semi-safe,
Immediate. This category is assigned to TDs
when an uncorrected safety condition exists that
and dangerous materials
could result in a fatal or serious injury to personnel,
d e s t r u c t i o n t o va l u a b l e p r o p e r t y, o r ex t e n s ive
Illustrated Parts Breakdown
damage. Compliance must be accomplished before
returning aircraft or equipment to service. Kits/parts
An illustrated parts breakdown (IPB), also known
required in this category should be requisitioned
as an illustrated maintenance parts list or illustrated
using supply issue group I.
parts catalog, is prepared by the manufacturer for
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