Use of the MAC
Approved item names are used throughout this MAC. Generic
terms/nomenclature (if any) are expressed in parentheses and are not to be
considered as official terminology.
This MAC assigns maintenance functions to the lowest level of maintenance, based on past experience and
Work time required.
Tools and test equipment required and/or available.
Only the lowest level of maintenance authorized to perform a maintenance function is indicated. If the lowest
maintenance level cannot perform all tasks of any single maintenance function (e.g., test, repair), then the higher
maintenance level(s) that can accomplish additional tasks will also be indicated.
A maintenance function assigned to a maintenance level will automatically be authorized to be performed at any
higher maintenance level.
A maintenance function that cannot be performed at the assigned level of maintenance for any reason may be
evacuated to the next higher maintenance level. Higher maintenance levels will perform the maintenance
functions of lower maintenance levels when required by the commander who has the authority to direct such
The assignment of a maintenance function will be construed as authorization to carry the related repair parts or
spares in stock. Information to requisition or otherwise secure the necessary repair parts will be as specified in the
Normally there will be no deviation from the assigned level of maintenance. In cases of operational necessity, at
the request of a lower maintenance level and on a one-time basis, transfer of maintenance functions to the lower
level may be accomplished by specific authorization of the maintenance officer of the higher level of maintenance
to which the function is assigned. The special tools, equipment, etc., required by the lower level of maintenance to
perform this function will be furnished by the maintenance level to which the function is assigned. This transfer of
a maintenance function to a lower maintenance level does not relieve the higher maintenance level of the
responsibility for the function. The higher level of maintenance will provide technical supervision and inspection of
the function being performed at the lower level.
Maintenance functions will be limited to and defined as follows:
1. Inspect. 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).
2. Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics
of an item and comparing those characteristics with prescribed standards.
3. Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean (includes
decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids,
a. Unpack. To remove from packing box for after service when required for the performance of maintenance
b. Repack. To return item to packing box after service and other maintenance operations.
d. Touch up. To spot paint scratched or blistered surfaces.
e. Mark. To restore obliterated identification.