MIL-PRF-23419H
4. VERIFICATION
4.1 Classification of inspection. The inspections specified herein are classified as follows:
a. Qualification inspection (see 4.4).
b. Verification of qualification (see 4.4.4).
c. Conformance inspection (see 4.6).
d. Periodic inspection (see 4.6.2)
4.2 QPL system. The manufacturer shall establish and maintain a QPL system as described in 3.3.
Evidence of such compliance shall be verified by the qualifying activity of this specification as prerequisite
for qualification and retention of qualification.
4.2.1 SPC system. A SPC system shall be established and maintained in accordance with EIA-557.
Evidence of such compliance shall be verified by the qualifying activity as a prerequisite for qualification
and retention of qualification.
4.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in
accordance with the test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202.
4.4 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to
the Government (see 6.3) on sample units produced with equipment and procedures normally used in
production.
4.4.1 Sample size. Unless otherwise specified (see 3.1) the number of samples submitted for
qualification shall be 22 each of the maximum and minimum current ratings for which qualification is
desired. Four additional samples each of the maximum and minimum ratings shall be forwarded to the
qualifying activity.
4.4.2 Inspection routine. The sample shall be subjected to the qualification inspection shown in table II,
in the order shown. All sample units shall be subjected to the inspection of group I. The sample shall
then be divided as specified in table II for group II to group VI inclusive.
4.4.3 Failures. One or more failures shall be cause for refusal to grant qualification approval.
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 group 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 QPL.
4.4.4.1 Failure to provide verification of the product within 30 days after the end of each 36-month
period may result in loss of qualification for the product. The contractor shall immediately notify the
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