The publications listed below pertains to the MK-2551A/U and its components:
Listing. Not applicable.
National Stock Numbers. National stock numbers (NSNs) that are missing from P source coded items have been
applied for and will be added to this TM by future change/revision when they are entered in the Army Master Data File
(AMDF). Until the NSNs are established and published, submit exception requisitions to: Commander, US Army
Communications-Electronics Command and Fort Monmouth, ATTN: AMSELLC-MM, Fort Monmouth, NJ 07703-5007 for
the part required to support your equipment.
HOW TO LOCATE REPAIR PARTS
When National stock number or part number is not known.
Using the table of contents, determine the assembly group or subassembly group to which the item
belongs. This is necessary since figures are prepared for assembly groups and subassembly groups, and listings are
divided into the same groups.
Second. Find the figure covering the assembly group or subassembly group to which the item belongs.
Identify the item on the figure and note the item number.
Refer to the Repair Parts Lists for the figure to find the part number for the item number noted on