MAINTENANCE ALLOCATION CHART
Section I- INTRODUCTION
This Maintenance Allocation Chart (MAC) provides a summary of the maintenance operations for the
Meteorological Measuring Set AN/TMQ-38 (MMS). Section II designates overall authority and responsibility for
the performance of specific maintenance functions on the identified items utilizing the indicated tools and
equipment. Section III identifies the tools and equipment required to perform each function. Section IV contains
supplemental instructions and explanatory notes.
B-2. MAINTENANCE FUNCTIONS.
Maintenance functions will be limited to and defined as follows:
a. Inspect. To determine the serviceable of an item by comparing its physical, mechanical, and/or electrical
characteristics with established standards through examination .
b. Test. To verify serviceability by measuring the mechanical or electrical characteristics of an item and
comparing those characteristics with prescribed standards.
To adjust specified variable elements of an item to bring about optimum or desired performance.
d. Replace. To remove an unserviceable item and install a serviceable counterpart in its place.
e. Repair. The application of maintenance services including fault location, disassembly/assembly,
removal/installation, and verification procedures to identify troubles and restore serviceability to an item by
correcting specific damage, fault, malfunction, or failure of an item.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II.
a.Group Number. This column lists the Logistic Support Analysis Control Number (LCN) assigned to
maintenance significant components, assemblies, subassemblies, and modules.
b. Component/Assembly. This column contains the names of components, assemblies, subassemblies, and
modules for which maintenance is authorized.
c. Maintenance Functions. This column lists the functions to be performed on the item listed.
d. Maintenance Category. This column specifies, by the listing of a work time figure in the appropriate
subcolumn(s) the category(s) of maintenance authorized to perform the maintenance function listed. This figure
represents the active time required to perform that maintenance function at the indicated category of
maintenance. If the number or complexity of the tasks within the listed maintenance function vary at different
maintenance categories, appropriate work time figures will be shown for each category. The work time figure
represents the average time required to restore an item to a serviceable condition under typical field operating
conditions. This time includes preparation time (including any necessary disassembly/assembly time), 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 symbol
designations for the various maintenance categories are defined as follows: