MAINTENANCE ALLOCATION CHART
SECTION I. INTRODUCTION
This section provides a general explanation of all maintenance and repair functions authorized at various
The Maintenance Allocation Chart (MAC) in Section II designates overall responsibility for the performance of
maintenance functions on the identified end item or component. The implementation of the maintenance functions upon
the end item or component will be consistent with the assigned maintenance functions.
Section III lists the special tools and test equipment required for each maintenance function as referenced from
Section II (Not applicable).
Section IV contains supplemental instructions on explanatory notes for a particular maintenance function. (Not
D-2. MAINTENANCE FUNCTIONS.
Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/or electrical
characteristics with established standards through examination.
Test. To verify serviceability and detect electrical or mechanical failure by use of test equipment.
Service. To clean, preserve, charge, and add fuel lubricants, cooling agents, and air. If it is desired that
elements, such as painting and lubricating, be defined separately, they may be so listed.
Adjust. To rectify to the extent necessary to bring into proper operating range.
Align. To adjust specified variable elements of an item to bring about optimum or desired performance.
Calibrate. To determine corrections to be made or to be adjusted on instruments or test measuring and
diagnostic equipments used in precision measurement. Consists of comparisons of two instruments, one of which is a
certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being