MILPRF55110G
APPENDIX A
A.4.5.2.1.1
A.4.5.2.1.1 Modifications to qualification test specimens. All portions of zones A, B, C (except for the external
conductor traces on test coupon E5), and D of the test pattern are now required for qualification testing. Zone D will
be used only in the manufacturer test routine detailed in A.4.5.3.1. Other changes to the design or requirements of
the qualification test specimens are detailed on the authorization to test form, DSCC Form 19W, available from the
qualifying activity. Requests for other modifications to the qualification test specimens shall be made prior to, or at
the time of, the request for qualification testing.
A.4.5.2.2
A.4.5.2.2 Sample size. A sample of at least four qualification test specimens shall be produced by the
manufacturer. Unless otherwise specified on the qualifying activity approved authorization, the qualification test
specimens shall be serialized and comply with the identification marking requirements of A.3.8.
A.4.5.3
A.4.5.3 Inspection routines. Qualification inspection shall consist of the tests and inspections specified below. The
following details shall apply:
a.
At least four qualification test specimens (zones A, B, C, and D) shall be tested by the manufacturer in
accordance with A.4.5.3.1.
b.
Two of the partial qualification test specimens (zones A, B, and C) that passed the tests specified in
A.4.5.3.1 shall then be destructively tested at a certified suitable laboratory (see A.6.5) in accordance with
c.
The two remaining partial qualification test specimens not subjected to destructive testing at a certified
suitable laboratory shall be retained as reference samples by the manufacturer for a period of 12 months.
A.4.5.3.1
A.4.5.3.1 Manufacturer test routine (MTR). The manufacturer shall perform the inspections specified in column
MTR of table AII. Non-desctructive inspections shall be performed on zones A, B, and C on all of the completed
qualification test specimens in the lot. Destructive testing and microsection inspections shall be performed on test
coupons from zone D. Further details concerning test coupons selection can be found in the application for
qualification available from the qualifying activity.
A.4.5.3.2
A.4.5.3.2 Certified suitable laboratory test routine (CTR). The certified suitable laboratory shall subject two of the
partial qualification test specimens (zones A, B, and C) to the inspections specified in column CTR of table AII. The
order of the inspections and tests is optional; however, the cleanliness test shall be performed first and DWV shall be
performed after MIR.
A.4.5.3.3
A.4.5.3.3 Contract services (see A.7.4). Manufacturers wanting to use contract services for production of printed
wiring boards shall first qualify using their own equipment or processes internal to their facility. Once qualified
internally, a manufacturer may qualify using the contract services. This additional contract services qualification will
not be listed on the QPL. The contract services shall not be extended to another external subcontractor or
manufacturing location. If the contract service process or manufacturing location is changed, the manufacturer shall
requalify the new contract service process.
A.4.5.3.4
A.4.5.3.4 Qualification rejection. Qualification approval will not be granted if any of the qualification test specimens
tested in accordance with table AII fail to meet the specified requirements.
A.4.5.4
A.4.5.4 Extent of qualification.
A.4.5.4.1
A.4.5.4.1 Printed wiring board type. Qualification of a particular printed wiring board type shall be extended to
cover all conductor patterns of that same printed wiring board type produced.
a.
Qualification of type 3 printed wiring boards shall be extended to cover types 1 and 2 printed wiring boards.
b.
Qualification of type 2 printed wiring boards shall be extended to cover type 1 printed wiring boards.
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