MIL-DTL-46789D(AT)
4.1.1 First article inspection. First article inspection shall be performed on preproduction
and initial production units as specified herein. Approval of the first production units by the
Government shall not relieve the contractor of the obligation to supply assemblies that are fully
representative of those inspected as a first article (see 6.3).
4.1.2 Preproduction inspection. When specified (see 6.2), the preproduction sample
shall consist of 2 units. Preproduction inspection shall consist of inspection as specified in
table II.
4.1.3 Initial production inspection. Unless otherwise specified (see 6.2), the Government
shall select two units from the first ten produced under the production contract for the initial
production inspection. The initial production samples shall be inspected as specified in table II.
4.1.4 First article test sequence. First article tests shall be conducted on the sample in
accordance with the test sequence specified in table III.
4.2 Conformance inspection. Conformance inspection shall include the examination of
4.2.2 and the tests of 4.2.3. Noncompliance with any of the specified requirements shall be
cause for rejection of the sample and the inspection lot. Following this test the assembly shall be
subjected to and pass the electrical output test of 4.6.1 (see 6.4).
4.2.1 Sampling plan. The sampling plan shall be as specified in the contract or work
order (see 6.2).
4.2.2 Examination. The sample selected in accordance with 4.2.1 shall be examined as
specified in table II. The major defects are safety, identification markings and interface while
the minor defect is the finish. The acceptance number in all cases is zero.
4.2.3 Test (100% inspection). Each item shall be subjected to the CI tests specified in
table II.
4.3 Verification methods. The types of verification methods included in this section are
visual, inspection, measurement, sample tests, full scale demonstration tests, or equivalent tests,
simulation modeling, engineering evaluation, component properties analysis, and similarity to
previously-approved or previously-qualified designs.
4.3.1 Verification alternatives. The manufacturer may propose alternative test methods,
techniques, or equipments including the application of statistical process control, tool control, or
cost-effective sampling procedures, to verify performance. See the contractor for alternatives
that replace verifications required by this specification.
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