(c) When supplies of the old NSN are exhausted, the PSCN for the new
item is canceled, and that new item is assigned an NSN of its own.
A PSCN is formatted as is shown in figure 1-12.
Figure 1-12. Permanent system control number format.
DAYS OF SUPPLY SHORT TABULAR METHOD FOR STOCKAGE LEVELS
The DOS stockage method allows you to compute stockage for a given number of
days based on the daily use or demand rate. By knowing how many of an item were used
in the past, you can compute future stockage for a given period. You use the DOS
method for items that are critically short, seasonally used, highly perishable, or have a
shelf life of less than one year. You use DA Form 1300-2 to do the DOS computation.
Make the computation by completing the form following the directions listed below. Refer
to figure 1-13, DA Form 1300-2 DOS Computation (sample).
a. Stock Number Block. Enter the stock number found on DA Form 1296. Refer
to Extract 1, Sample of DA Form 1296, page Extract 1-2, to see where the stock number
information is located.
b. Unit Price Block. Enter the cost of the item for the quantity expressed by the
unit of issue code. If the item is identified by an NSN, use the unit price found in the
ARMS Monthly AMDF.
c. Stockage Method Block. This is a DOS computation; check the DOS block.
d. Repaired for Stock Block. Leave blank; use this block only when the
economic order quantity (EOQ) stockage method block is checked.