TM 55-1730-229-12
AG 320A0-OMM-000
TO 35C2-3-473-1
TM 1730-12/1
MAINTENANCE ALLOCATION CHART
INTRODUCTION
Section I.
authorized to perform these functions.
The symbol designations for the various
maintenance categories are as follows:
a. This section provides a general
explanation of all maintenance and re-
C
-
Operator or crew
pair functions authorized at various
O
maintenance levels.
-
Organizational maintenance
F
-
Direct support maintenance
H
-
General support maintenance
b. Section II designates overall re-
D
-
Depot maintenance
sponsibility for the performance of
maintenance functions on the identified
The maintenance functions are defined as
end item or component. The implementa-
follows:
tion of the maintenance functions upon
the end item or component will be con-
A - Inspect. To determine service-
sistent with the assigned maintenance
ability of an item by comparing its
functions.
and electrical
physical,
mechanical,
characteristics with established stan-
c. Section III lists the tools and
dards.
equipment required for each maintenance
function as referenced from Section II.
B - Test. To verify serviceability
and to detect electrical or mechanical
d. Section IV contains supplemental
failure by use of test equipment.
instructions, explanatory notes and/or
illustrations required for a particular
To clean, to pre-
C - Service.
maintenance function.
serve, to charge, and to add fuel, lub-
EXPLANATION OF COLUMNS IN
ricants, cooling agents, and air. If it
SECTION II.
is desired that elements, such as paint-
ing and lubricating, be defined sepa-
rately, they may be so listed.
a. Group Number, Column 1. The as-
sembly group is a numerical group as-
D - Adjust. To rectify to the ex-
signed to each assembly in a top down
tent necessary to bring into proper op-
breakdown sequence. The applicable as-
erating range.
sembly groups are listed on the MAC in
disassembly sequence beginning with the
E - Align. To adjust specified
first assembly removed in a top down
variable elements of an item to bring to
disassembly sequence.
optimum performance.
b. Assembly Group, Column 2. This
the
F -Calibrate. To determine
column contains a brief description of
corrections to be made in the readings
the components of each assembly group.
of instruments or test equipment used in
Consists of the
precise measurement.
c. Maintenance Functions, Column 3.
comparison of two instruments, one of
This column lists the various mainte-
which is a certified standard of known
nance functions (A through K) and indi-
accuracy, to detect and adjust any
cates the lowest maintenance category
