maintenance and operations of embarked aircraft. It is
tailored for each carrier, and the items listed are
selected from all allowance requirement registers and
allowance lists (ARRs and ALs) from each type of
aircraft embarked. The allowance quantities are based
on the ships’ demand records. The AVCAL is
comprised of seven basic parts; they are titled as
follows:
Part I. AVCAL Index List
Part II. ARR Gross Item List
Part III. AVCAL Net List
Part IV. Part Number to NSN Cross-Reference
Part V. Requirements List
Part VI. Excess Material List
Part VII. Stock Rotatable List
For more detailed information on the AVCAL and
the specific parts, refer to Afloat Supply Procedures,
NAVSUP PUB-485, and FASOINST 4441.15
CODED NATIONAL STOCK
NUMBER
Each Navy item stocked under centralized
inventory control has assigned an NSN. The NSN is
used for all supply management functions and in all
supply publications.
The NSN is a 13-digit number that identifies an
item of material in the supply system. It consists of
the four-digit federal supply classification (FSC)
plus a nine-digit national item identification number
(NIIN). The NIIN consists of a two-digit National
Codification Bureau (NCB) code and seven digits that
uniquely identify each NSN item in the Federal Supply
Distribution System. Additionally, within the Navy
supply system, code prefixes and suffixes are used.
These prefixes and suffixes are used only within the
Navy and not in interservice transactions. So, when
you requisition an item from supply in the Navy, you
use the coded NSN for that item. Figure 3-8 shows you
a complete coded NSN. The parts of this number are
discussed in the following text.
Cognizance Symbol. The cognizance symbol is a
two-character prefix. It identifies the systems
command, office, agency, or Navy inventory manager
that controls the category of material. The cognizance
symbol 7R, shown in figure 3-8, tells you that the item
of supply is under the control of the Aviation Supply
Office (ASO).
Material Control Codes. Material Control codes
divide inventories into segments that show similar
demand or repairability. Look at figure 3-8 again.
Here, Material Control code H tells you that the item
is a depot-level repairable. Since the item cannot be
repaired locally, it must be shipped to a naval aviation
depot (NADEP) or commercial concern for repair.
Material Condition Codes. Material Condition
codes classify material in terms of readiness for issue
and use. They also identify action under way to change
the status of material. Condition codes A through S
(less I and O) are assigned to Navy material. The
Material Condition code F, shown in figure 3-8, tells
you that the item of supply is fast moving, in high
demand, and used quite often.
Figure 3-8.—Breakdown of a coded national stock number.
3-13
