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MIL-T-81404B(AS)
Life tests sample selection.
TABLE VI.
Quantity of Test Sets
Quantity to be Selected
Offered for Acceptance
for Life Test
First 25
1
Next 175
1
Next 300
1
1 for each additional
500 or fraction thereof
4.5.6.3 Performance check. At approximately eight hour intervals during
the test, a limited performance check shall be made. The performance check
shall be subject to acceptance by the procuring activity (see 6.2.2).
4.5.7 Test data.  The contractor shall keep a daily record of the
performance of the test sets, making particular note of any deficiencies or
failures.  In the event of part failures, the defective part shall be replaced
and the operation resumed for the balance of the test period.  A record shall
be kept of all failures throughout the test.  This record shall indicate the
following:
a.
Part type number
The circuit reference symbol number
b.
c. The part function
d.
Name of the manufacturer
e. Nature of the failure
f.
The number of hours which the part operated prior to failure
4.5.7.1 Failure report.  In the event of a failure, the government
inspector shall be notified immediately.  A report shall be prepared and made
available for the procuring activity upon completion of the test (see 6.2.2).
In this report, the contractor shall propose suitable and adequate design or
material corrections for all failures which occurred.  The procuring activity
will review such proposals and determine whether they are acceptable.
4.6 Electromagnetic interference (EMI) tests. EMI tests shall be
performed in accordance with MIL-I-6161 to determine that the test set meets
the requirements specified in 3.3.2.
4.7 Environmental tests.  The test set shall be subjected to
environmental tests in accordance with MIL-T-21200 for class 2 equipment.
4.8 Warm-up time.
Warm-up time shall not be required prior to recording
performance test data.
18

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