TM 55-4920-394-13&P
c. A maintenance function assigned to a maintenance level will automatically be authorized to be
performed at any higher maintenance level.
d. A maintenance function that cannot be performed at the assigned level of maintenance for any reason
may be evacuated to the next higher maintenance organization. Higher maintenance levels will perform the
maintenance functions of lower maintenance levels when required or directed by the appropriate commander.
e. The assignment of a maintenance function will not be construed as authorization to carry the associated
repair parts in stock. Authority to requisition, stock, or otherwise secure necessary repair parts will be-as
specified in the repair parts and special tools list appendix.
f. Normally there will be no deviation from the assigned level of maintenance. In cases of operational
necessity, maintenance functions assigned to a maintenance level may, on a one-time basis and at the request
of the lower maintenance level, be specifically authorized by the maintenance officer of the 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 of the function. The higher level of maintenance will provide technical
supervision and inspection of the function being performed at the lower level.
g. Organizational through depot maintenance of the US Army Electronics Command equipment will be
performed by designated US Army Electronics Command personnel.
h. Changes to the MAC will be based on continuing evaluation and analysis by responsible technical
personnel and on reports received from field activities.
B-3. Definitions.
a. Inspect. To determine serviceability of an item by comparing its physical, mechanical and electrical
characteristics with established standards.
b. Test. 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. To clean, to preserve, to charge, and to add fuel, lubricants, cooling agents and air.
d. Adjust. To rectify to the extent necessary to bring into proper operating range.
e. Aline. To adjust specified variable elements of an item to bring to optimum performance.
B-3