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MIL-A-81359(AS)
Quantity of Equipments
Quantity to be Selected
Offered for Acceptance
For Sampling Test
0*
First 10
1
Next 50
1
Next 75
1
Next 100
1 for each additional
200 or fraction thereof
*NOTE: If by contract action the initial production test (4, 3) is deleted, then a
sample test shall be conducted on one equipment from the first 10 produced.
Scope of Tests - As a minimum, each equipment selected for sampling
4.4.2.1
tests shall be subjected to the following tests:
(1)
Complete operational test at ambient room conditions, making all
necessary measurements to assure that all applicable specification
requirements have been met.
(2) Operational test at certain environmental conditions. The conditions
may vary for each equipment tested and should be based on results of
the preproduction, initial production, individual and special tests.
(3) Manufacturing run in test specified in 4.4.1.3 except that the test
duration shall be 120 hours with no restriction on the number of
failures. However, each failure shall be analyzed as to cause and
remedial action necessary to reduce the possibility of its recurrence
in future equipment.
4.4.3
Reliability Assurance Tests - Reliability assurance tests shall be con-
ducted as required by MIL-STD-781. Equipments selected for reliability assurance tests
shall first have passed the individual tests.
4.4.3.1
Test Level - The Test Level shall be F from Table I of MIL-STD-781.
4.4.3.2
Accept-Reject Criteria - Test Plan V of MIL-STD-781 shall be used to
determine the accept-reject criteria for the reliability y qualification test plan. Test Plan VI
of MIL-STD-781 shall be used to determine the accept-reject criteria for the reliability
sampling test plan.
4.4.3.3
Length of Heat Portion of Cycle - After stabilization at the high tempera-
ture limit required by the test level, the equipment shall be operated 2 hours during each
cycle.
4.4.3.4
Performance Characteristics to be Measured - The performance charac-
teristics to be measured shall be as specified in 6.10.
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