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TM 10-4930-229-12&P
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
B-1. Maintenance Allocation Chart (MAC). This MAC assigns maintenance functions in accordance
with the Three Level Maintenance Concept.
B-2. Use of the Maintenance Allocation Chart, Section II
a. The MAC assigns maintenance functions based on the following considerations:
(1) Skills available.
(2) Work time required.
(3) Tools and test equipment required and/or available.
b. If a lower level of maintenance identified in column (4) of the MAC cannot perform all tasks of a single
maintenance function (e.g., test, repair), then the higher level that can perform other tasks of that function is also
indicated.
c.
Higher maintenance levels are automatically authorized to perform maintenance functions assigned to a
lower maintenance level.
d. Higher maintenance levels will perform the maintenance functions of lower maintenance levels when
required or directed by the Commander who has authority to direct such tasking.
e. Assignment of a maintenance function in the MAC does not carry automatic authorization to carry the
related spare or repair parts in stock. Information to requisition or secure parts will be as specified in the
associated Repair Parts and Special Tools List (RPSTL).
f. Normally, there is no deviation from the assigned level of maintenance. However, in cases of operational
necessity, maintenance functions assigned to a higher level may be assigned to a lower level on a one-time basis,
with authorization from the higher level maintenance officer. Transfer of a function to a lower level does not
relieve the higher level of responsibility. The higher level will provide technical supervision and inspection of the
function being performed.
B-3. Maintenance Functions. Maintenance functions will be limited to and defined as follows:
a. 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).
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.
B-1
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