MIL-PRF-49465C
TABLE VIII. Group B inspection.
Number of
Requirement
Method
Number of
failures
Inspection
paragraph
paragraph
sample units
allowed
Semiannually
Subgroup 1
4
0
Resistance to solvents
Subgroup 2
Thermal shock
Resistance temperature characteristic
Low temperature storage
10
(6 highest
1
Short time overload
Dielectric withstanding voltage
4 lowest)
Insulation resistance
Moisture resistance
Terminal strength
Annually
20
Subgroup 1
(10 highest
1
Life
10 lowest)
Subgroup 2
Thermal shock
30
1
Shock (specified pulse)
(15 highest
Vibration, high frequency
15 lowest)
Subgroup 3
30
High temperature exposure
(15 highest
1
15 lowest)
4.7.1.1.2 Annually (subgroup 1, subgroup 2, and subgroup 3). Sample units and tests shall be as specified in
table VIII. The test sample should include all styles allowed to be combined for lot formation (see 4.6.1.1) as
practicable. A complete separate sample shall be selected for each enclosure material.
4.7.2 Disposition of sample units. Sample units that have been subjected to group B inspection shall not be
delivered on the contract or purchase order.
4.7.3 Noncompliance. If a sample fails to pass group B inspection, the manufacturer shall immediately notify the
qualifying activity and the cognizant inspection activity of such failure and take correct action on the materials or
processes, or both, as warranted, and on all units of product that can be corrected and that were manufactured under
essentially the same materials or processes, and which are considered subject to the same failures. Acceptance and
shipment of the product shall be discontinued until corrective action, acceptable to the qualifying activity has been
taken. After the corrective action has been taken, group B inspection shall be repeated on additional sample units (all
inspections, or the inspection that the original sample failed, at the option of the qualifying activity). Group A
inspection may be reinstituted; however final acceptance and shipment shall be withheld until the group B
re-inspection has shown that the corrective action was successful. In the event of failure after re-inspection,
information concerning the failure shall be furnished to the cognizant inspection activity and qualifying activity.
4.7.4 Inspection of packaging. The sampling and inspection of the preservation, packaging, and container marking
shall be in accordance with the requirements of section 5.
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