MIL-PRF-49462C
4.5 Retention of qualification. Every 12 months, the manufacturer shall verify the retention of
qualification to the qualifying activity. In addition, the manufacturer shall immediately notify the qualifying
activity whenever the group B inspection results indicate failure of the qualified product to meet the
requirements of this specification. Verification shall be based on meeting the following requirements:
a. The manufacturer has not modified the design of the item.
b. The specification requirements for the item have not been amended so far as to affect the
character of the item.
c. Lot rejection for group A inspection does not exceed the group A sampling plan.
d. The requirements for group B inspection are met.
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e. Periodic group C inspection.
When group B requirements were not met and the manufacturer has taken corrective action satisfactory
to the Government, group B inspection retesting shall be instituted.
4.6 Conformance inspection.
4.6.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A and
group B inspection.
4.6.1.1 Inspection and production lot.
4.6.1.1.1 Inspection lot. An inspection lot, as far as practicable, shall consist of all resistors of the
same style, characteristic, and protective enclosure or coating produced in a period not to exceed 30
days, produced under essentially the same conditions and offered for inspection at one time.
4.6.1.1.2 Production lot. A production lot shall consist of all resistors of the same characteristic, style,
nominal resistance value, and resistance tolerance. Manufacture of all parts in the lot shall have been
started, processed, assembled, and tested as a group. Lot identity shall be maintained throughout the
manufacturing process.
4.6.2 Group A inspection. Group A inspection shall consist of the inspections specified in table VI and
shall be made on the same set of sample units, in the order shown.
4.6.2.1 Sampling plan.
4.6.2.1.1 Subgroup I. Subgroup 1 tests shall be performed on a production lot basis on 100 percent of
the product supplied under this specification. Resistors that are out of resistance tolerance, or which
experience a change in resistance greater than that permitted for the tests of this subgroup shall be
removed from the lot. Lots having more than 10 percent total rejects, due to exceeding the specified
resistance change limit shall not be furnished on contracts.
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