TM 1-5855-265-20
B-2
B-1. MAINTENANCE ALLOCATION CHART (cont)
(b) Less than Company Size Aviation Units: aviation elements organic to brigade, group,
battalion headquarters, and detachment size units are normally small and have less than 10 aircraft
assigned. Maintenance tasks performed by these units will be those which can be accomplished by the
aircraft crew chief or assigned aircraft repairman and will normally be limited to preventive maintenance,
(c) inspections, servicing, spot painting, stop drilling, application of nonstress patches,
minor adjustments, module/component fault diagnosis, and replacement of selected modules/
components. Repair functions will normally be accomplished by the supporting AVIM unit.
(2) Aviation Intermediate Maintenance (AVIM) provides mobile, responsive "One-Stop"
maintenance support. (Maintenance functions which are not conducive to sustaining air mobility will be
assigned to depot maintenance.) AVIM may perform all maintenance functions authorized to be done at
AVUM. Repair of equipment for return to user will emphasize support or operational readiness
requirements. Authorized maintenance includes replacement and repair of modules/components and
end items which can be accomplished efficiently with available skills, tools, and equipment. AVIM
establishes the Direct Exchange (DX) program for AVUM units by repairing selected items for return to
stock when such repairs cannot be accomplished at the AVUM level. The AVIM level inspects,
troubleshoots, performs diagnostic tests, repairs, adjusts, calibrates, and alines aircraft system modules/
components. AVIM units will have capability to determine the serviceability of specified modules/
components removed prior to the expiration of the Time Between Overhaul (TBO) or finite life. 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. Air frame
repair and fabrication of parts will be limited to those maintenance tasks which can be performed with
available tools and test equipment. Unserviceable reparable modules/components and end items which
are beyond the capability of AVIM to repair will be evacuated to Depot Maintenance. AVIM will perform
aircraft weight and balance inspections and other special inspections which exceed AVUM capability.
Provides quick response maintenance support, including aircraft recovery and air evacuation, on-the-job
training, and technical assistance through the use of mobile maintenance contact teams. Maintains
authorized operational readiness float aircraft. Provides collection 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 nondivisional
AVIM unit.)
B-2. USE OF THE MAINTENANCE ALLOCATION CHART (SECTION II)
Nomenclatures used throughout the MAC are approved item names.
Those terms/nomenclatures expressed in parentheses are generic in
nature and are not to be considered as official terminology.
a. The Maintenance Allocation Chart assigns maintenance functions to the lowest category of
maintenance based on past experience and the following considerations:
(1) Skills available
(2) Work time required
