MAINTENANCE ALLOCATION CHART
The purpose of the maintenance allocation chart is to provide all activities with maintenance functions to be performed at each level of
a. Column 1, Group number. Column 1 lists group numbers, the purpose of which is to identify components, assemblies,
subassemblies, and modules with the next higher assembly.
b. Column 2, Functional group . Column 2 lists the noun names of components, assemblies, subassemblies, and modules on
which maintenance is authorized.
Column 3, Maintenance functions . Maintenance functions will be limited to and defined as follows:
Inspect. To determine serviceability of an item by comparing its physical, mechanical, and electrical characteristics with
Test. To verify serviceability and to detect electrical or mechanical failure by use of test equipment.
Service. To clean, to preserve, to charge, and to add fuel, lubricants, cooling agents, and air. If it is desired that
elements, such as painting and lubricating, be defined separately, they may be so listed.
Adjust. To rectify to the extent necessary to bring into proper operating range.
Align. To adjust specified variable elements of an item to bring to optimum performance.
Calibrate . To determine the corrections to be made in the readings of instruments or test equipment used in precise
measurement. Consists of the comparison 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 being compared with the certified standard.