TM55-1680-358-12&P
service and make operational, capacity, and pressure checks to hydraulic systems. Perform servicing, functional
adjustments, and minor repair/replacement to the flight control, propulsion, power train, and fuel systems. Accomplish air
frame repair that does not require extensive disassembly, jigging, or alinement. The manufacture of air frame parts will
be limited to those items which can be fabricated with tools and equipment found in current air mobile tool and shop sets.
Evacuate unserviceable modules/components and end items beyond the repair capability of AVUM to the supporting
AVIM.
(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 ten aircraft assigned. Maintenance taks
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 preventive maintenance, inspections, servicing, spot painting, stop drilling,
application of nonstress patches, minor adjustments, module/component fault diagnosis, and replacement of selected
modules/compononts. 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 established 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, adjust, 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)
a.
The Maintenance Allocation Chart assigns maintenance functions to the lowest
B-2
