MIL-PRF-39017G
4.7.6 Noncompliance. If a sample fails to pass group C inspection, the manufacturer shall immediately
notify the qualifying activity and the cognizant inspection activity of such failure and take corrective action
on the materials or processes, or both, as warranted, and on all units of product which can be corrected
and which were manufactured under essentially the same materials and processes and which are
considered subject to the same failure. For ER level, acceptance and shipment of the product shall be
discontinued until corrective action; acceptable to the qualifying activity has been taken. For C level, stop
shipment may not be necessary depending on the nature of the failure. After the corrective action has
been taken, group C inspection shall be repeated on additional sample units (all inspections, or the
inspection which the original sample failed, at the option of the qualifying activity). Group A and group B
inspections may be reinstituted; however, final acceptance and shipment shall be withheld until the group
C inspection has shown that the corrective action was successful.
4.8 Methods of inspection.
4.8.1 Visual and mechanical inspection. Resistors shall be examined to verify that the materials,
design, construction, physical dimensions, marking, and workmanship are in accordance with the
applicable requirements (see 3.1, 3.4, 3.5 to 3.5.3 inclusive, and 3.27 to 3.28 inclusive). Visual aid for
this requirement shall not exceed 10X.
4.8.2 Power conditioning (see 3.8).
4.8.2.1 Mounting.
4.8.2.1.1 Qualification inspection. Resistors shall be mounted horizontally in free space with no object
closer than 3 inches to the resistor case, except the mounting base, which shall be no closer than 2
inches below the resistors. They shall be mounted in still air, with no circulation other than that caused by
the heat of the resistors being operated. Test ambient temperature shall be 20°C to 45°C.
4.8.2.1.2 Conformance inspection. Resistors may be mounted in any position and allotted any size
space as deemed necessary by the manufacturer. Forced air cooling may be used to maintain a test
ambient temperature of 20°C to 45°C. The velocity of the forced air, if employed, shall not exceed 500
feet per minute. When forced air is employed, there shall be no direct impingement of the forced air
supply upon the resistors.
4.8.2.2 Procedure. The load applied shall be 1.5X rated power for duration of 24 hours. The
maximum voltage shall be as specified (see 3.1). The voltage applied may be ac or dc. DC resistance
as specified in 4.8.3 shall be examined for evidence of arcing, burning, or charring.
25
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business