numbers. They can be easily converted to NSNs by using the Master Cross-Reference List (MCRL).
Table 1-44 shows excerpts from the MCRL. If the part or reference numbers do not cross to an NSN, the
P/N can be used to order the replacement. A good source of part numbers is the parts list in the equipment
Table 1-44.Excerpts from Master Cross-Reference List (MCRL)
COORDINATED SHIPBOARD ALLOWANCE LIST (COSAL).The COSAL can help you to
identify repair or replacement parts. Part IIB of the COSAL is a cross-reference (microfiche only) from
circuit symbol number to PN/NIIN/NICN. These parts are normally carried onboard ship for ready issue.