MIL-DTL-5794C
TABLE V. Group B sampling plan.
Sample size
Lot size
Group B
2 to
25
2
26 to
50
3
51 to
90
4
91 to
150
5
151 to
280
6
281 to
500
7
501 to 1,200
8
1,201 to 3,200
9
Over 3,200
5 per
thousand
4.4.4 Group C inspection. This inspection shall be as specified in table IV and shall normally be
performed on sample units that have been subjected to and met group A and group B inspection.
4.4.4.1 Sampling for Group C inspection. Samples for group C inspection shall be selected as
specified in table VI, and inspected as specified in table IV, from which no failures are permitted:
TABLE VI. Group C sampling plan.
Purchase
Number to be tested
quantity
Up to 300
1
301 to 700
2
701 to 1500
3
1501 to 3000
5
Over 3000
5 per thousand
4.4.4.2 Noncompliance. If one or more sample units fail 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 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.
4.4.4.2.1 Disposition of samples. Samples, which have passed the group C inspection, may be
delivered on the contract, if the lot is accepted and the samples are still within specified electrical
tolerances.
4.5 Test conditions. Unless otherwise specified or indicated, the microphone unit shall be tested under
the following conditions:
a.
Temperature.
Between 20 and 35 degrees Centigrade.
b.
Pressure.
Normal atmospheric.
c.
Humidity.
Between 25 and 90 percent relative.
d.
Position.
The face of the microphone shall be in a vertical plane.
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