MODERN BURNER UNIT (MBU)
MAINTENANCE ALLOCATION CHART
subassembly, component, module, end item, or system) to a serviceable condition under typical field operating
conditions. This time includes item preparation (including any necessary disassembly/assembly time),
troubleshooting/fault location time, and quality assurance/quality control time in addition to the time required to
perform the specific tasks identified for the maintenance functions authorized in the maintenance allocation chart.
The system designations for the various maintenance levels are shown below:
C ....... Operator or crew
O ....... Unit Maintenance
F ....... Direct Support Maintenance
H ....... General Support Maintenance
D ....... Depot Maintenance
(5) Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual tools)
common TMDE, and special tools, special TMDE, and support equipment required to perform the designated
(6) Column 6, Remarks. This column, when applicable, contains a letter code, in alphabetic order, which is keyed
to the remarks contained in Table 6-3.
d. Explanation of Columns in the Tools and Test Equipment Requirements
Column (1) - Tool or Test Equipment Reference Code. The tool or test equipment reference code correlates with
a code used in column (5) of the MAC.
Column (2) - Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment.
Column (3) - Nomenclature.Name or identification of tool or test equipment.
Column (4) - National Stock Number (NSN).The NSN of the tool or test equipment.
Column (5) - Tool Number. The manufacturers part number, model number, or type number.
e. Explanation of Columns in Remarks
Column (1) - Remarks Code. The code recorded in Column (6) of the MAC.
Column (2) - Remarks. This column lists information pertinent to the maintenance function being performed as
indicated in the MAC.