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TM 55-4920-412-13&P
repairs, adjusts, calibrates, and aligns system modules/
components. Module/component disassembly and
repair will support the DX program and will normally be
limited to tasks requiring cleaning and the replacement
of seals, fittings and items of common hardware.
Unserviceable reparable modules/ components and end
items which are beyond the capability of AVIM to repair
will be evacuated to Depot Maintenance. This level will
perform
special
inspections
which
exceed
AVUM
capability. Provides quick response maintenance
support, on-the-job training, and technical assistance
through the use of mobile maintenance contact teams.
Maintains
authorized
operational
readiness
float.
Provides collections and classification services for
serviceable/
unserviceable
material
Operates
a
cannibalization activity in accordance with AR 750-50.
(The
aircraft
maintenance
company
within
the
maintenance battalion of a division will perform AVIM
functions consistent with air mobility requirements and
conservation of personnel and equipment resources.
Additional intermediate maintenance support will be
provided by the supporting non-divisional AVIM unit).
B-2. USE OF THE MAINTENANCE ALLOCATION
CHART.
a.
The MAC assigns maintenance functions to the
lowest level of maintenance based on past experience
and the following consideration:
(1)
Skills available.
(2)
Time required.
(3)
Tools and test equipment required and/or
available.
b.
Only the lowest level of maintenance authorized
to perform a maintenance function is indicated If the
lowest level of maintenance cannot perform all tasks of
any single maintenance function (e.g., test, repair), then
the higher maintenance level(s) than can accomplish
additional tasks will also be indicated.
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.
Align. To adjust specified variable elements of
an item to bring to optimum performance.
f.
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
B-2
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