MAINTENANCE ALLOCATION CHART (MAC)
Section I. INTRODUCTION
This section provides a general explanation of all maintenance and
repair functions authorized at various maintenance categories.
The Maintenance Allocation Chart (MAC) in section II is used to
designate overall authority and responsibility for the performance of
maintenance functions on the identified end item or component.
application of the maintenance functions to the end item or component
be consistent with the capacities and capabilities of the designated
Section III lists the tools and test equipment (both special tools
and common tool sets) required for each maintenance function as referenced
from section II.
Section IV contains supplemental instructions and explanatory notes
for a particular maintenance function.
Maintenance functions will be limited to and defined as follows:
To determine the serviceability of an item by comparing its
physical, mechanical, and/or electrical characteristics with established
standards through examination (e.g., by sight, sound, or feel).
To verify serviceability by measuring the mechanical,
pneumatic, hydraulic, or electrical characteristics of an item and
comparing those characteristics with prescribed standards.
Operations required periodically to keep an item in proper
operating condition, i.e. , to clean (includes decontaminate, when
required), preserve, drain, paint, or to replenish fuel, lubricants,
chemical fluids, or gases.
To maintain or regulate, within prescribed limits, by
bringing into proper or exact position, or by setting the operating
characteristics to specified parameters.
To adjust specified variable elements of an item to bring
about optimum or desired performance.