Explanation of Format

TM 11-6625-1668-12

l.. Symbols. The upper case letter placed in the appropriate column indicates the lowest level at which that

particular maintenance function is to be performed.

B-3. Explanation of Format

a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify com-

ponents, assemblies, subassemblies, and modules with the next higher assembly.

b. Column 2, Functional Group. Column 2 lists the noun names of the components, assemblies sub-

assemblies, and modules on which the maintenance is authorized.

c. Column 3, Maintenance Functions. Column 3 lists the maintenance category at which performance of

the specific maintenance function is authorized. Authorization to perform a function at any category also

includes authorization to perform that function at higher categories. The codes used represent the various

maintenance categories as follows:

Code

Maintenance category

C......................

Operator/crew

O .....................

Organizational maintenance

F ......................

Direct support maintenance

H......................

General support maintenance

D......................

Depot maintenance

d. Column 4, Tools and Test Equipment. Column 4 specifies, by code, those tools and test equipment

required to perform the designated function. The numbers appearing in this column refer to specific tools and

test equipment which are identified in table I.

e. Column 5, Remarks. Self-explanatory.

B-4. Explanation of Format of Table I, Tool and Test Equipment Requirements

The columns in table I are as follows:

a. Tools and Equipment. The numbers in this column coincide with the numbers used in the tools and

equipment column of the maintenance allocation chart. The numbers indicate the applicable tool for the

maintenance function.

b. Maintenance Category. The codes in this column indicate the maintenance category normally allocated

the facility.

c. Nomenclature. This column lists tools, test, and maintenance equipment required to perform the

maintenance functions.

d. Federal Stock Number.

This column lists the Federal stock number of the specific tool or test

equipment.

e. Tool Number. Not used.

B-2