MIL-PRF-83287G
TABLE II. Group A inspection.
Inspection
Requirement paragraph
Test method paragraph
Visual and dimensions inspection
3.1, 3.3 to 3.4.11 incl., 3.23 and 3.24
4.5.1
Insulation resistance
Dielectric withstanding voltage
Operating voltage/transfer pulse length
DC resistance
Coil transient suppression
(indicators with diodes only) 1/
Thermal shock
Insulation resistance
Dielectric withstanding voltage
Operating voltage/transfer pulse
length
1/ Photographs are required for qualification inspection only.
4.4.3 Periodic inspection. Periodic inspection shall consist of group B. Except where the results of these
inspections show noncompliance with the applicable requirements (see 6.5), delivery of products which have passed
group A shall not be delayed pending the results of these periodic inspections.
4.4.3.1 Group B inspection. Group B inspection shall consist of the inspections specified in table III, in the order
shown. Group B inspection shall be made on sample units selected from inspection lots which have passed group A
inspection.
4.4.3.1.1 Sampling plan. Twelve indicators representing each specification sheet, as applicable (see 3.1), shall be
selected once each 24 months. The indicators shall be representative of production during the previous 24-month
period, but may be limited to two PINs representing the distinctions specified in 4.5.4. All units shall be subjected to
subgroup 1 inspection and then divided into equal lots for subgroup 2 and subgroup 3 inspection.
4.4.3.1.2 Failures. If two or more sample units fail to pass group B inspection, the sample shall be considered to
have failed.
4.4.3.1.3 Disposition of sample units. Sample units which have been subjected to group B inspection shall not be
delivered on the contract.
4.4.3.1.4 Noncompliance. If a sample fails to pass group B inspection, the supplier shall take corrective action on
the materials or processes, or both, as warranted, and on all units of product which can be corrected and which were
manufactured under essentially the same conditions, with essentially the same materials, processes, etc., and which
are considered subject to the same failure. Acceptance of the product shall be discontinued until corrective action,
acceptable to the government has been taken. After the corrective action has been taken, group B inspection shall
be repeated on additional sample units (all inspection, or the inspection which the original sample failed, at the option
of the Government). Group A inspection may be reinstituted; however, final acceptance shall be withheld until the
group B reinspection has shown that the corrective action was successful. In the event of failure after reinspection,
information concerning the failure and the corrective action taken shall be furnished to the cognizant inspection
activity and the qualifying activity.
4.5 Methods of inspection.
4.5.1 Visual and dimensional inspection. Indicators shall be inspected to verify that materials, design and
construction, marking, and workmanship are in accordance with the applicable requirements (see 3.1, 3.3 to 3.4.11
inclusive, 3.23 and 3.24).
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