MIL-DTL-25879G
4.5.1.4 Rejected lots. If an inspection lot is rejected, the supplier may rework it to correct the defects, or screen
out the defective units, and resubmit for re-inspection. Resubmitted lots shall be inspected using sample size C in
accordance with table IV in place of sample size B for group A inspection until at least 3 consecutive lots have
passed. Such lots shall be separate from new lots, and shall be clearly identified as re-inspected lots.
4.5.1.5 Disposition of sample units. Sample units which have been subjected to group A, subgroup II inspection
shall not be delivered on the contract or purchase order.
4.5.2 Group B inspection. Group B inspection shall consist of the tests specified in table V, in the order shown.
Group B inspection shall be made on sample units which have passed group A subgroup I inspection. Except where
the results of these inspections show noncompliance with the applicable requirements, delivery of products which
have passed group A shall not be delayed pending the results of these verification inspections.
TABLE V. Group B inspection. 1/
Test
Requirement
Test
Number of
paragraph
paragraph
sample units
to be inspected
──┐
RF power handling
│
capability - - - - - - - - - -
│
Thermal shock - - - - - - - -
3.4.1
├─── 6
Random vibration - - - - -
3.4.4
│
Shock - - - - - - - - - - - - -
3.4.3
│
Connector torque - - - - - -
──┘
Immersion - - - - - - - - - - -
3.4.2
1/ Inspection for each test shall be performed on a sample of 6 units. No failures shall be
allowed. A sample unit having one or more defects shall be considered as a single failure.
4.5.2.1 Post tests. The manufacturer, at his option, need not perform the post tests described after each
environmental performance test as referenced in 3.4 until after all the environmental performance tests are
completed. The requirements for each post test referenced must be met at this time.
4.5.2.2 Failures. If there are any failures, the sample shall be considered to have failed.
4.5.2.3 Disposition of sample units. Sample units which have been subjected to group B inspection shall not be
delivered on the contract or purchase order.
4.6 Test equipment and inspection facilities. Test and measuring equipment and inspection facilities of sufficient
accuracy, quality, and quantity to permit performance of the required inspection shall be established and maintained
by the supplier. The establishment and maintenance of a calibrated system to control the accuracy of the measuring
and test equipment shall be in accordance with NCSL-Z540.3. The instruments used in making the first article
approval electrical tests shall have been compared with the secondary standards within thirty days of the beginning of
the first article approval tests.
4.7 Methods of examination and test.
4.7.1 Visual and mechanical examination (see 3.1.2, 3.1.2.1, 3.1.2.3, 3.2, 3.2.5, 3.2.9, 3.2.11, 3.6, and 3.8).
Switches shall be examined to verify that the materials, size, mounting, weight, design, construction, finish, marking,
and workmanship are in accordance with the applicable requirements.
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