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|  MIL-T-85395(AS)
4.5.4 Special tests. Special tests shall be conducted on a quantity of test
sets as specified in the contract (see 6.2.1) for the purpose of checking the
effect of any design or material change on the performance of the equipment
and to assure quality control. The test sets selected for special tests may
be from test sets previously subjected to the sampling or reliability
assurance tests.
4.5.4.1 Special test schedule.
Selection of test sets for special tests
shall be made as foll ows:
a. On early equipments after an engineering or material change.
b.
Whenever failure reports or other evidences indicate that additional
tests are required.
(This will be determined by the procuring
activity.)
4.5.4.2 Scope of tests. Special tests shall consist of such tests as are
acceptable to the procuring activity. Test procedures previously approved for
the first article tests may be used where applicable. When not applicable,
the contractor shall prepare a test procedure and make it available it to the
procuring activity for approval prior to conducting the tests (see 6.2.2).
4.5.5 Equipment failure.
Should a failure occur during either the sampling,
reliability assurance or special tests, the following action shall be taken:
Determine the cause of failure.
a.
Determine if the failure is an isolated case or due to design defect.
b.
c. Make available to the procuring activity for acceptance the proposed
corrective action intended to reduce the possibility of the same
failure occurring in future tests (see 6.2.2).
Where practical, include a test (in the individual test) to check all
d.
test sets for this requirement until assurance is forthcoming that the
defect has been corrected.
4.5.6 Life test. The contractor shall furnish all samples and shall be
responsible for accomplishing the life test. The test shall be of 300 hours
duration and shall be conducted on equipments that have passed the individual
The life test shall be performed under the conditions specified in
tests.
4.5.6.1.
The life test sample will be selected by the Government inspector in
accordance with table IV.
(Equipments which have successfully completed the
sampling tests, reliability tests, or special tests may be selected for life
tests.)
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