TM 55-4920-399-13&P
e. The assignment of a maintenance function
calibrates, a n d aligns system modules/com-
will not be construed as authorization to carry the
p o n e n t s . Module/component disassembly and
associated repair parts in stock. Authority to re-
repair will support the DX program and will nor-
quisition, stock, or otherwise secure necessary
mally be limited to tasks requiring cleaning and
repair parts will be as specified in the repair parts
the replacement of seals, fittings and items of com-
and special tools list appendix.
mon hardware. Unserviceable reparable
modules/components and end items which are
f. Normally there will be no deviation from the-
beyond the capability of AVIM to repair will be
assigned level of maintenance. In cases of opera-
evacuated to Depot Maintenance. This level will
tional necessity, maintenance functions assigned
perform special inspections which exceed AVUM
to a maintenance level may, on a one-time basis
capability. Provides quick response maintenance
and at the request of the lower maintenance level,
s u p p o r t , on-the-job-training, a n d technical
be specifically authorized by the maintenance of-
assistance through the use of mobile maintenance
ficer to the level of maintenance to which the func-
contact teams. Maintenance authorized opera-
tion is assigned. The special tools, equipment, etc.
tional readiness float. Provides collections and
required by the lower level of maintenance to per-
classification services f o r serviceable/unser-
f o r m this function will be furnished by the
viceable material. Operates a cannibalization ac-
maintenance level to which the function is as-
tivity in accordance with AR 750-50. (The aircraft
signed. This transfer of a maintenance function to
maintenance company within the maintenance bat-
a lower maintenance level does not relieve the
talion of a division will perform AVIM functions
higher maintenance level of the responsibility of
consistent with air mobility requirements and con-
the function. The higher level of maintenance will
servation of personnel and equipment resources.
provide technical supervision and inspection of
Additional intermediate maintenance support will
the function being performed at the lower level.
be provided by the supporting non-divisional
g. Organizational through depot maintenance of
AVIM unit).
the US Army Electronics Command equipment
will be performed by designated US Army Elec-
B-2. Use of the Maintenance Allocation Chart.
tronics Command personnel.
a. The MAC assigns maintenance functions to
h. Changes to the MAC will be based on continu-
the lowest level of maintenance based on past ex-
i n g evaluation and analysis by responsible
perience and the following considerations:
technical personnel and on reports received from
(1) Skills available.
field activities.
(2) Time required.
B-3. Definitions.
(3) Tools and test equipment required and/or
a. Inspect. To determine serviceability of an
available.
item by comparing its physical, mechanical and
b. Only the lowest l e v e l of maintenance
electrical characteristics with established stan-
authorized to perform a maintenance function is
dards.
indicated. If the lowest level of maintenance can-
b. Test. To verify serviceability and detect inci-
not perform all tasks of any single maintenance
pient failure by measuring the mechanical or elec-
f u n c t i o n (e.g., test, repair), then the higher
trical characteristics of an item and comparing
maintenance level(s) that can accomplish. addi-
those characteristics with prescribed standards.
tional tasks will also be indicated.
c. Service. To clean, to preserve, to charge, and
c. A maintenance function assigned to a
to add fuel, lubricants, cooling agents and air.
maintenance level will automatically be author-
ized to be performed at any higher maintenance
d. Adjust. To rectify to the extent necessary to
level.
bring into proper operating range.
d. A maintenance function that cannot be per-
e. Aline. To adjust specified variable elements
formed at the assigned level of maintenance for
of an item to bring to optimum performance.
any reason may be evacuated to the next higher
f. Calibrate. To determine the corrections to be
maintenance organization. Higher maintenance
made in the readings of instruments or test equip-
levels will perform the maintenance functions of
ment used in precise measurement. Consists of the
l o w e r maintenance levels when required or
comparison of two instruments, one of which is a
directed by the appropriate commander.
certified standard of known accuracy, to detect
B-2
