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Page Title:
Reliability and maintainability demonstrations and tests |
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| MlLT81821
MOMI, regardless of the time required. The trainer panel shall be capable of meeting the
performance requirements without alignment or adjustment other than the accessible controls
employed for operation of the panel. No repairs shall be permitted during the operational tests. If
repairs are required, the test shalI be repeated after the necessary repairs or replacements have been
made. Trainers requiring interconnection for complete system demonstration shall be tested as a
unit to insure proper operation of all components. Associated trainer power supply equipment, such
as power conversion units, direct-current power units, cables and power distribution junction boxes,
and also all applicable system Ground Support Equipment (GSE) and special tools shall be
functionally tested in conjunction with applicable trainers prior to delivery.
The electronic trainer panels shall be
4.2.4.3 Electromagnetic interference suppression test.
tested to determine conformance to the electromagnetic interference suppression requirements of
paragraph 3.3.2 herein, by means of the applicable test methods specified in MILSTD462, for
Class 1D equipment, which are concerned with conducted and radiated electromagnetic emissions,
and with degradation of performance of equipment due to susceptibility to electromagnetic
interference.
4.2.4.4 Reliability and maintainability demonstrations and tests.
Reliability and
maintainability demonstrations and tests, if required by the contract or Detail Specification, shall
be subject to the following criteria:
a.
Monitoring instruments shall be used to observe essential operating
characteristics and to determine the time of failure.
A failure wiII be considered to have occurred whenever the trainer
b.
panel requires corrective maintenance action in order to perform its function
within specified limits.
A pattern failure shall be considered to have occurred when two or
c.
more failures of the same part in its identical or equivalent application
exceeds its combined predicted failure rate. Necessary corrective action, at
no cost to the Government, shall be required for pattern failures.
These tests may be performed separately or in conjunction with any other tests to which the
trainers are subjected at the discretion of the Government and as specified in the individual trainer
reliability demonstration and test procedures. Equipment mission, failure, and accept/reject criteria
shall also be defined in the reliability demonstration and test procedures for each trainer.
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