MIL-DTL-12285F
TABLE IV. Group B inspection.
Requirement
Test method
Inspection
paragraph
paragraph
High temperature
Waterproofness
Corrosion
Fungus
Shock
Vibration
Endurance 1/
Examination of product
1/ If the internal switch is a QPL 24236 switch, endurance
testing does not need to be completed.
4.6.3 Retention of qualification. To retain qualification, the supplier shall forward to the qualifying
activity via Government quality assurance representative at yearly intervals, summaries of group A
inspection for that period, along with group B test reports, when applicable. The summary of group A
inspections shall indicate as a minimum the number of inspection lots which have passed and the number
which failed (including the number and type of any part failures, the reason for failure, the corrective
action taken and how the lot was reexamined). The group B test report shall cover the actual tests
performed. If the results for group B tests indicate nonconformance with the specification requirements,
action shall be taken to remove the failing products from the qualified products list. Failure to submit the
summary shall result in loss of qualification for that product. In the event that no production occurred
during the reporting period, a report shall be submitted certifying that the company still has the
capabilities and facilities necessary to produce the item.
4.6.4 Group B suspension. At the request of the manufacturer group B testing may be suspended
with the qualifying activity's approval, if it can be demonstrated that these test have been performed 3
consecutive times with zero failures, If the design, material, construction, or processing is changed or if
there are any quality problems or failures, the qualifying activity may require resumption of the original
testing requirement. Regardless of reduction of tests, the manufacturer shall supply product capable of
passing the prescribed tests.
4.7 Methods of inspection.
determined by inspection of contractor records providing proof or certification that design, construction,
processing, and materials conform to requirements. Applicable records shall include drawings,
specifications, design data, receiving inspection records, processing and quality control standards, vendor
catalogs and certifications, industry standards, test reports, and rating data.
specified in table II.
4.7.3 Calibration. To determine conformance to 3.5.1, the sample shall be mounted as specified in
4.3 in such a position that the circulating oil-bath will cover it to the smaller end of the tapered thread.
The switch shall be connected through the indicator lamp to the voltage supply. The initial oil-bath
temperature shall be a minimum of 6ºC (10.8ºF) below the rated temperature of the switch. Oil bath
temperature shall be increased at a rate no greater than 0.58ºC (1ºF) per minute. The temperature at
which the switch contacts close the circuit shall be recorded.
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