Explanation of Columns in the Tool and Test Equipment Requirements

TM 55-1905-243-24&P

Column (4) Maintenance Level. Column (4) specifies each level of maintenance authorized to perform each

function listed in column (3), by indicating work time required (expressed as man-hours in whole hours or

decimals) in the appropriate sub-column. This work time figure represents the active time required to perform

that maintenance function at the indicated level of maintenance. If the number or complexity of the tasks within

the listed maintenance function varies at different maintenance levels, appropriate work time figures are to be

shown for each level. The work time figure represents the average time required to restore an item (assembly,

subassembly, component, module, end item, or system) to a serviceable condition under typical field operating

conditions. This time includes preparation time (including any necessary disassembly/assembly time),

troubleshooting/fault location time, and quality assurance time in addition to the time required to perform the

specific tasks identified for the maintenance functions authorized in the MAC. The symbol designations for the

various maintenance levels are as follows:

C Operator or crew maintenance

O Unit maintenance

F Direct support maintenance

L Specialized repair activity (SRA)

H General support maintenance

D Depot maintenance

NOTE

The "L" maintenance level is not included in column (4) of the MAC. Functions to this

level of maintenance are identified by a work time figure in the "H" column of column

(4), and an associated reference code is used in the REMARKS column (6). This code

is keyed to the remarks and the SRA complete repair application is explained there.

Column (5) Tools and Test Equipment Reference Code. Column (5) specifies, by code, those common tool

sets (not individual tools), common Test, Measurement and Diagnostic Equipment (TMDE), and special tools,

special TMDE and special support equipment required to perform the designated function. Codes are keyed to

the entries in the tools and test equipment table.

Column (6) Remarks Code. When applicable this column contains a letter code, in alphabetical order, which

is keyed to the remarks table entries.

A-4 Explanation of Columns in the Tool 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.

A-3