MIL-DTL-28788C
TABLE III. Group A inspection.
Requirement
Test method
Inspection
Paragraph
Paragraph
Calibration
Run-in (when specified)
Calibration 1/
Dielectric withstanding voltage
Insulation resistance
Seal (when specified)
1/ Applicable only when run-in is required.
TABLE IV. Zero defect sampling plan.
Number of switches
Lot size
to be tested1/
1
- 50
5
51
- 90
7
91
- 150
11
151
- 280
13
231
- 500
16
501
- 1,200
19
1,201
- 3,200
23
3,201
- 10,000
29
10,001
- 35,000
35
1/ For lot sizes that are less than required
sample size, all switches shall be tested.
4.6.1.2.1
Sampling plan. Statistical sampling shall be in accordance with table III and
table IV. A randomly selected group(s) of samples is required. For acceptance of the lot there shall be
zero occurrences of defects.
4.6.1.2.2
Rejected lots. If an inspection lot is rejected, the contractor may rework it to
correct the defects, or screen out the defective units, and resubmit for reinspection. Resubmitted lots
shall be inspected using tightened inspection. Such lots shall be separate from new lots, and shall be
clearly identified as reinspected lots.
4.6.1.2.3 Disposition of sample units. Sample units which have passed all the group A inspection
may be delivered on the contract, if the lot is accepted and the sample units are still within specified
electrical tolerances.
4.6.2 Packaging inspection. The sampling and inspection of the preservation-packaging, packing
and container marking shall be in accordance with the requirements of MIL-DTL-28786.
4.7 Methods of inspection.
4.7.1 Visual and mechanical examination. Switches shall be examined to determine that the
materials, design, construction, physical dimensions, marking, and workmanship are in accordance with
10
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business