According to an article entitied “Draft Maintenance Allocation Chart (MAC)”
, which directly links to the US Army Life Cycle Logistics Chart
, “the Maintenance Allocation Chart (MAC) is a list of equipment maintenance functions showing the maintenance level at which each maintenance task is authorized. The MAC is arranged in functional group code sequence or in top-down, breakdown sequence in the logical order of disassembly.” Additionally, “the MAC documents the details of a system's maintenance plan. It is a list of equipment maintenance functions showing the maintenance level for the performance of maintenance functions on an identified end item or component.
Thus, the MAC identifies and authorizes specific maintenance functions (e.g., inspect, test, replace, repair, etc.) for each maintenance level to be performed. The MAC is arranged in functional group code (FGC) sequence or in top-down, breakdown sequence in the logical order of disassembly which is also used by the Repair Parts and Special Tools List (RPSTL) in its order of assembly/subassembly listings. Also, the MAC establishes a time standard for each authorized maintenance function as a functional group entry, lists the tools and test equipment required for each maintenance function to the various maintenance levels, and contains supplemental instructions and explanatory notes for a particular maintenance function.”
Key references Army personnel may want to review to better understand the MAC and FGC include AR 25-30, AR 750-l, AR 700-127, AR 750-2, MIL-STD-40051, and MIL-HDBK-1222, and GEIA-STD-0007.