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|  MIL-T-83734D (AS)
3. 1.7 Marking and identification. Marking and identification shall be
in accordance with GS 30620-781 and panel marking processes in accordance
with FS 31050-038. The requirements of MIL-N-18307 shall apply as speci-
fied in GS 30620-781.
3.1.8 Soldering. Soldering shall be performed in accordance with
MIL-STD-454, Requirement 5, MIL-S-46844, or DP 30847-008 as appropriate.
Solder for use in microelectronic items shall be in accordance with
HMS 22-1672.
3.1.9 Welding.
3.1.9.1 Structural. Structural welding shall be in accordance with
MIL-STD-454, Requirement 13.
3.1.9.2 Welds, resistance, electrical interconnections. Electrical
interconnection resistance welds shall be in accordance with MIL-STD-454,
Requirement 24 or in accordance with HP 11-39.
3.1.10 Printed wiring. Printed wiring (etched circuitry) shall be in
accordance with HP 31-12, HP 31-17, HP 31-14 or HP 31-16. Plated-through.
holes may be used in lieu of test jacks. When using the Repairable Multi-
layer Circuit Assembly Method (REMCAM) one or two REMCAM flat leads may
occupy the plated through hole with the component lead, provided the pro-
cedure for this process is in accordance with DP 31050-918 and DP 31050-919.
3.1.11 Engineering changes to printed circuit boards. In the event that
an engineering change to a printed circuit board cannot be implemented in
the appropriate master patterns before the start of board fabrication,
DP 50062 and DP 30847-008 may be used as the workmanship criterion for
effecting the engineering change. In those cases where the rework deviates
from the MIL-STD-454, Naval Technical Representative (NTR) approval of a
minor deviation on a DD Form 1694 is required before production release of
the engineering.
3.1.12 Replaceability of electronic standard parts and materials. Non-
standard nonapproved electronic items may be used in the AN/AWM-23 with
no requirement for traceability to a particular SRA or WRA in only those
cases where approved parts are not available to meet schedule requirements.
When such a replacement is utilized, the contractor shall abide by the
replaceability of electronic standard parts and materials requirements of
MIL-T-21200 as follows:
The equipment shall be arranged to permit replacement of the
a.
nonstandard, nonapproved items by the approved items.
NTR approval of a minor deviation on a DD Form 1694 is re-
b.
quired before the items are incorporated into any hardware.
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