MIL-DTL-11193E
4.3 Conformance inspection. The contractor, to demonstrate compliance with specified requirements, shall
perform the inspection specified in 4.3.1 through 4.3.3. This does not relieve the contractor of his responsibility for
performing any additional inspection which is necessary to control the quality of the product and to assure compliance
with all specification requirements. The Government may review and evaluate the contractor's inspection procedures
and examine the contractor's inspection records. In addition the Government at Its discretion may perform all or any
part of the specified inspection, to verify the contractor's compliance with specified requirements. Test equipment for
Government verification inspection shall be made available by the contractor. No group B inspection is specified for
these microphones.
4.3.1 Group A inspection. Units presented for acceptance shall be inspected for conformance with the criteria
specified in table II. Lots shall be formed and subjected to the sampling plan as indicated.
TABLE II. Group A inspection.
Inspection
Requirement paragraph
Inspection paragraph
Visual and mechanical
4.4
Performance
Switch contact pressure
Dielectric strength and
Insulation resistance
Operation
4.3.2 Group C inspection. This inspection shall be as listed in table III. Samples shall be selected from those
which have passed group A inspection.
4.3.2.1 Sampling for group C inspection. One microphone out of each 1,000 or fraction thereof shall be selected
at random for each test listed in table III.
4.3.2.2 Noncompliance. If a sample unit fails group C inspection, the contractor shall immediately investigate the
cause of failure and shall report to the Government inspector the results thereof and details of the corrective action
taken on the process and all units of product which were manufactured with the same conditions, materials,
processes, etc. If the Government inspector does not consider that the corrective action will enable the product to
meet specified requirements, or if the contractor cannot determine the cause of failure, the matter shall be referred to
the contracting officer (see 6.4).
TABLE III. Group C inspection.
Inspection
Requirement paragraph
Inspection paragraph
Switch Life
Immersion
Interchangeability
4.3.3 Reinspection of conforming group C sample units. Unless otherwise specified sample units which have been
subjected to and passed group C inspection, may be accepted on contract, provided that switches which have been
life tested are replaced and the units are reworked and pass group A Inspection.
4.4 Visual and mechanical inspection. The microphone shall be examined for compliance with the workmanship
requirements of 3.10.
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