one identification number. This is shown at both
the top and the bottom of the page. Each AEL
has the word END printed in the center of the
page immediately following the last line of data
for that AEL. his ensures that a complete AEL
Characteristics: A general description, charac-
teristics, and/or other identifying information
concerning the equipage/system named in item
1. This may include additional information as
stated in the text.
Reference number/description data: Contains
significant information, manufacturers part
numbers, reference numbers, special comments
and references to other AELs, and so forth.
Item name: Arranged in alphabetical sequence,
the name of each item; and when appropriate or
dimensions, and so forth, to describe the item
Stock number: The FSN assigned to the items.
When an FSN is not assigned, this position
shows a manufacturers part or catalog number
or other identifying number.
Security classification: Reserved for future
Source code: Shows the availability of the items
and the method of procuremcnt. These codes are
defincd in the introduction.
Maintenance code: Reserved for future COSAL
Recoverability code: Shows the recoverability
characteristics of the item as follows:
Blank: Column reserved for future COSAL USC.
Allowance notes codes: Provides neccessary and
important information about individual items
on the AEL. The introduction lists and defines
Custody codes: Reserved for future COSAL
Unit of issue: Thc smallest quantity of a stock
item that can be issued.
Quantity: Normally blank See the text for
On board allowance table: Consist of eight
numbered columns in which quantities may be
shown. In certain cases, the total shipboard
allowance quantity is determined by the sum
total of quantities appearing in designated
columns of several AELs. The COSAL index
will show all applicable AEL numbers and the
appropriate columns for each. The abbreviation
AR (as required) may appear instead of a
quantity. Information as to quantity allowed will
then be contained elsewhere in the AEL.
Ship type and hull number: The specific ship for
which the AEL is published.
Page: Consecutive page numbering from first
page to last page of all AEL pages published in
Idcntification number: Same as item 3.
Date: Same as item 4.
Page: Same as item 5.
The Characteristics column (No. 6) may also
contain information to help you determine allowance
quantity, equipage type, and substitutions necessary
because of differences in the installed equipment and the
characteristics of the ship.
The Quantity column (No. 18) is normally blank,
but when it is used, as in figure 5-5, it shows the quantity
of the individual items included in the equipage item.
his helps you replace items that have been used.
STOCK NUMBER SEQUENCE LIST (SNSL).
Thc SNSL is composed of two parts: storeroom items
(SNSL-SRI) and operating space items (SNSL-OSI).
Supply officers use the SNSL-SRI to determine what
repair parts to stock in the storerooms. They use the
SNSL-OSI to determine the items required or generally
used to maintain engineering spaces and equipment. We
said earlier that the controlled equipage allowance
shown on the SNSL-OSI is mandatory, but the
consumable items are listed only as a guide.
ALTERNATE NUMBER CROSS REFER-
ENCE TO STOCK NUMBER. The cross-reference
section contains all of the reference numbers
(specification, plan, catalog, part, or type number) in the
APLs. It cross-references them to the current NSN, if
one is assigned.
COSAL MAINTENANCE. We said earlier that
the COSAL is one of the primary publications to use