TM 11-5860-200-12
(a) Company Size Aviation Units: Perform those tasks which consist primarily of preventive
maintenance and maintenance repair and replacement functions associated with sustaining a high level of aircraft
operational readiness. Perform maintenance inspections and servicing to include preflight, daily, intermediate, periodic
(or phased), and special inspections as authorized by the MAC or higher headquarters. Identify the cause of
equipment/system malfunctions using applicable technical manual troubleshooting instructions, built-in test equipment
(BITE), installed aircraft instruments, or test, measurement, and diagnostic equipment (TMDE). Replace worn or
damaged modules/components that do not require complex adjustments or system alignment and which can be
removed/installed with available skills, tools, and ground support equipment. Perform operational and continuity checks
and make minor repairs to the electrical system. Inspect, 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 alignment. 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 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, inspections, servicing, spot painting, stop drilling,
application of non-stress patches, minor adjustments, module/component fault diagnosis, and replacement of selected
modules/components. Repair functions will normally be accomplished by the supporting AVIM unit.
B-2
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