MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
This section provides a general explanation of all maintenance and repair functions authorized at various
Section II designates overall responsibility for the performance of maintenance functions on the identified end item
or component and the work measurement time required to perform the functions by the designated maintenance level
The implementation of the maintenance functions upon the end item or component will be consistent with the assigned
Section III lists the special tools and test equipment required for each maintenance function as referenced from
Section II. (Not Applicable).
d Section IV contains supplemental instructions or explanatory notes for a particular maintenance
B-2. EXPLANATION OF COLUMNS IN SECTION II
Column (1), Group Number.
A number is assigned to each group in a top down breakdown sequence. he
applicable groups are listed on the MAC in disassembly sequence beginning with the first group removed.
Column (2), Functional Group.
This column contains a brief description of the components of each numerical
Column (S), Maintenance Functions.
This column lists the various maintenance functions (A through K} The
lowest maintenance level authorized to perform these functions is indicated by a symbol in the appropriate column.
Work measure- ment time standards (the active repair time required to perform the maintenance function) are shown
directly below the symbol identifying the maintenance level.
The symbol designations for the various maintenance
levels are as follows:
C - Operator or crew
O - Organization maintenance
F - Direct support maintenance
H - General support maintenance
D - Depot maintenance
The maintenance functions are defined as follows:
A-Inspect. To determine serviceability of an item -by comparing its physical, mechanical, and electrical
characteristics with established standards through examination.
To verify serviceability and detect incipient failure by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
C -Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean, to
preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies.
D--Adjust. To maintain within prescribed limits, by bringing into proper or exact position, or by setting the
operating characteristics to specified parameters.
E --Align. To adjust specified variable elements of an item to bring about optimum or desired performance.
F - Calibrate.
To determine and cause 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
G -Install The act of emplacing, seating, or fixing into position an item, part, or module (component or assembly)
in a manner to allow the proper functioning of an equipment or system.
H - Replace.
The act of substituting a service-able like type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.
I--Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, or replace) or
other maintenance actions (welding, grinding, reveting, straightening, facing, remachining or resurfacing) to restore
serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, modure
(component or assembly), end item, or system.
That maintenance effort (service/action) necessary to restore an item to a completely
serviceable/operational condition as pre-scribed by maintenance standards (i.e., DMWR) in appropriate technical
publication. Overhaul is nor-