TM 1-4920-445-13&P
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INTRODUCTION CONTINUED
Use of the MAC
NOTE
Approved item names are used throughout this MAC. Generic terms/nomenclature (if any) are
expressed in parentheses and are not to be considered as oficial terminology.
This MAC assigns maintenance functions to the lowest level of maintenance, based on past experience and the
following considerations:
Skills available.
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 func-
tions of lower maintenance levels when required by the commander who has the authority to direct such tasking.
The assignment of a maintenance function will not 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 speciied
in the associated RPSTL.
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 speciic authorization of the maintenance oficer 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 trans-
fer 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
Maintenance functions are limited to and deined as follows:
1.
Inspect. To determine the serviceability of an item by comparing its physical, mechanical, and/or elec-
trical 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 charac-
teristics 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 luids, or gases.
a.
Unpack. To remove from packing box for after service when required for the performance of
maintenance operations.
b.
Repack. To return item to packing box after service and other maintenance operations.
c.
Clean. To rid the item of contamination.
d.
Touch up. To spot paint scratched or blistered surfaces.
e.
Mark. To restore obliterated identiication.
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