MIL-PRF-19207G
4.4.4 Verification of qualification. To retain qualification, the manufacturer shall provide verification to
the qualifying activity for the following items at 36-month intervals:
a. Design of the fuseholders has not changed.
b. Verification that the conformance inspections have been performed on inspection lots supplied to
the requirements of this specification (group A and B).
c.
Verification that the periodic inspection, (group C), has been performed as applicable. If there is
an indication of nonconformance with specification requirements, and corrective action
acceptable to the qualifying activity has not been taken, action may be taken to remove the failing
product from the qualified products list.
Failure to provide verification of the product within 60 days after the end of each 36-month period may
result in loss of qualification for the product. The contractor shall immediately notify the qualifying activity
at any time during the 36-month period that verification indicates failure of the qualified product to meet
the requirements of this specification.
In the event that no production occurred during the reporting period, the contractor shall verify to the
qualifying activity that the capability to manufacturer and test QPL fuseholders still exists and that the
contractor wants to remain on the QPL. If during two consecutive reporting periods there has been no
production, the manufacturer may be required, at the discretion of the qualifying activity, to submit a
representative product of each style, voltage rating, and current rating to testing in accordance with the
qualification inspection requirements.
4.5 Conformance inspection. Conformance inspection shall consist of the tests and examination
4.5.1 Indicating fuseholders. For indicating fuseholders, all lamp circuit assemblies shall be inspected
for a blown fuse indication either during the manufacturing process or prior to delivery. Any convenient
voltage that will cause the lamp to illuminate may be used.
4.5.2 Inspection lot. An inspection lot shall consist of all fuseholders of the same type, produced under
essentially the same conditions, and offered for inspection at one time. The lot may include the entire
contract quantity, or it may be the production of any convenient time period.
4.5.3 Group A inspection.
4.5.3.1 Sampling plan. Group A inspection shall be on an inspection lot basis. Samples shall be
selected in accordance with table III, based on the inspection lot. If there are one or more failures, the
inspection lot shall be considered to have failed.
TABLE III. Group A, zero defect sampling plan.
Lot size
Sample size
1-
13
100 percent
14 -
150
13
151 -
280
20
281 -
500
29
501 -
1,200
34
1,201 -
3,200
42
3,201 - 10,000
50
10,001 - 35,000
60
35,001 - 150, 000
74
150,001 - 500,000
90
500,001 and up
102
10
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