MIL-DTL-55661C
4.5.1.5.1.3 Order of inspection within group C. Group C inspection shall be performed in an order
which is satisfactory to the Government.
TABLE IV. Group C inspection.
Inspection
Requirement
Inspection
paragraph
paragraph
Subgroup 1
Salt spray (see note)
3.10.2
4.7.2
Thermal shock
3.10.3
4.7.3
Shock (connector plug
3.10.4
4.7.4
only)
Shock drop (connector
3.10.5
4.7.5
plug only)
Vibration
3.10.6
4.7.6
Subgroup 2
Moisture resistance
3.10.9
4.7.9
Temperature cycling
3.10.10
4.7.10
NOTE: The equipment shall be thoroughly washed, cleaned, dried and
refurbished after this specification before proceeding with subsequent inspection.
4.5.1.5.2 Noncompliance. If one or more sample units fails to pass Group C inspection, the lot shall be
considered to have failed. If a sample fails to pass Group C inspection, the manufacturer shall notify the
Contracting Officer and the cognizant inspection activity of such failure and take corrective action on the
materials pr processes, or both, as warranted, and on all units of product which can be corrected and
which are manufactured under essentially the same materials and processes, and which are considered
subjected to the same failure. Acceptance and shipment of product shall be discontinued until corrective
action, acceptable to the Contracting Officer has been taken. After the corrective action has been taken,
Group C inspection shall be repeated on additional sample units (all tests and examinations, or the test
which the original sample failed, at the option of the Contracting Officer). Groups A and B inspections
may be re-instituted; however, final acceptance and shipment shall be withheld until the Group C
inspection has shown that the corrective action was successful. In the event of failure after re-inspection,
information concerning the failure shall be furnished to the cognizant activity and the Contracting Officer.
4.5.1.5.3 Re-inspection 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 the contract provided
all damage is repaired and the sample units are re-subjected to and pass Group A inspection.
4.5.1.5.4 Disposition of group C sample units. Unless otherwise specified, sample units which have
been subjected to and passed group C inspection may be delivered in the contract, provided sample units
meet requirements of 4.5.1.5.3.
4.6 Electrical tests.
4.6.1 Continuity. The connector under test shall be mated to a Connector, Plug, Electrical
UG-1870( )/U containing a contact assembly from current production, to determine compliance with the
requirements specified in 3.9.1.
4.6.2 Dielectric withstanding voltage. This test shall be conducted in accordance with MIL-STD-202,
method 301 to determine compliance with 3.9.2.
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