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MILT81821
(GFE), unless the failure is a result of the Contractor's trainer design, which is not within the design
limits of the equipment operation.
3.2.4 Maintainability. Maintainability requirements shall be in accordance with
MILSTD470, except that there shall be no requirement for a written maintainability program
plan or a design review and evaluation plan prepared specifically to satisfy the requirements of
MlLSTD470. However, during the design drawing review, the Procuring Activity will review the
Contractor's maintainability considerations for compliance with the requirements specified herein.
The Contractor shall only be responsible for the maintainability requirements of trainer-peculiar
items. Emphasis shall be placed on design and construction to provide the following considerations:
A minimum number of parts consistent with reliability and performance
(a)
specified herein.
Minimum time and training necessary for assembly, disassembly, location
(b)
of trouble sources, and maintenance including servicing.
Permit maintenance with general-purpose tools and equipment normally
(c)
available commercially. The requirement for special-purpose tools and
equipment shall be subject to approval by the Procuring Activity.
Permit adjustments, servicing, replacement of parts and components, and
(d)
other maintenance with minimum disturbance to other equipment parts
or components.
Permit rapid visual inspection of all parts and components that are most
(e)
likely to fail and that could cause personnel hazards if they fail during use.
(f)
Where adjustment may be required, all cams, gears, pulleys, etc., mounted
on a shaft shall be secured to the shaft by two hex socket setscrews
located approximately 90 to 135 apart. Where adjustment is not
required, these items shall be secured to the shaft with a keyway and a
pin.
(g)
Require minimum time to repair each failure, excluding parts acquisition
time.
20

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