MILPRF55110G
APPENDIX A
A.3.8
A.3.8 Marking. Unless otherwise specified (see A.6.2), each production printed wiring board, each qualification
test specimen, and each set of quality conformance test circuit strips (as opposed to each individual test coupon)
shall be marked as specified (see A.3.1.1) and herein. As a minimum, each production printed wiring board,
qualification test specimen, or quality conformance test circuit strip shall reference the printed wiring board
manufacturers' CAGE code, lot date, and printed wiring board traceability code. The marking shall be produced by
the same process used in producing the conductive pattern; or by the use of a nonconductive, fungistatic ink; or paint
applied to the printed wiring board; or to a label which is applied to the printed wiring board; or by mechanical pencil
marking, mechanical machining, or laser machining on a metallic area provided for marking purposes. All marking
shall be able to withstand solder fluxes, cleaning solutions, and molten solder encountered in the manufacture of
printed wiring boards. The marking shall remain legible after all tests and in no manner affect printed wiring board
performance.
A.3.9
A.3.9 Traceability. Unless otherwise specified, traceability shall be available for review by the qualifying or
acquiring activity for a minimum of 3 years after delivery of the printed wiring boards. Supporting test data, test
coupons, and microsection mounts shall be retained by the manufacturer or acquiring activity.
A.3.9.1
A.3.9.1 Quality conformance test circuitry, test coupons, and microsection mounts. Each quality conformance test
circuitry (QCTC) shall be identifiable with those corresponding production printed wiring boards produced on the same
panel that also produced the QCTC. All individual test coupons (including those in micorsection mounts) separated
from its QCTC, or qualification test specimen, shall have its traceability maintained back to the panel, QCTC, or
qualification test specimen from which the test coupons were separated. When a QCTC or test coupon is
representative of more than one printed board design (multiple designs per panel), it shall be traceable to those
printed boards fabricated on that panel. When a microsection mount contains more than one specimen, an
orientation mark or other identification marking shall identify layer one of the first specimen. Also, unless otherwise
listed on the multiple specimen microsection mount, traceability identifying all specimens contained in a mount shall
be maintained.
A.3.9.2
A.3.9.2 Printed board materials. Traceability shall be such that for each printed wiring board, all printed board
materials specified or used shall be traceable to a material production lot, inspection lot, or other specified grouping.
A.3.10
A.3.10 Repair. When inspected in accordance with A.4.8.1, printed wiring boards shall not be repaired or reveal
any evidence of repair.
A.3.11
A.3.11 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally
preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the
operational and maintenance requirements, and promotes economically advantageous life cycle costs.
A.3.12
A.3.12 Workmanship. Printed wiring boards shall be processed in such a manner as to be uniform in quality and
shall be free from defects in excess of those allowed in this appendix that could affect life or serviceability.
A.4
A.4. VERIFICATION
A.4.1
A.4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:
Qualification inspection (see A.4.5).
a.
b.
Inspection of product for delivery (see A.4.6).
c. Periodic conformance inspection (see A.4.7).
A.4.2
A.4.2 Test and measuring equipment. Measuring and test equipment of sufficient precision and bias, quality, and
quantity to permit performance of the required inspection shall be established and maintained by the manufacturer.
The establishment and maintenance of a calibration system to control the accuracy of the measuring and test
equipment shall be in accordance with appendix C.
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