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|  MIL-C-45975B(AR)
APPENDIX B
d. Examine tubes at in-process and final assembly point to assure that
defects are purged from the inventory and are not presented to the
Government for acceptance.
e. Submit results of the failure analysis and corrective actions taken to the
Government for evaluation and approval to retest or continue the test.
40.6 Scoring Criteria. The failure scoricng procedure (see 40.6.5) provides for
the use of the failure definition (see 50.4) which is amplified (see 40.6.1).
Failure criteria (see 40.6.2), degraded modes of operation (see 40.6.3) and
failure exclusions (see 40.6.4) pertaining to the cannon provide additional
failure scoring guidelines.
40.6.1 Failure definition amplification.
40.6.1.1 The following are not considered as reliability failures:
a. Scheduled replacement of parts before failure.
b.
An incipient-malfunction corrected during scheduled preventive maintenance
on the part in question provided a higher level of maintenance is not
necessary.
c.
A malfunction resulting from not following the prescribed operational-or
maintenance procedures or schedule dictated by the equipment manuals.
d.
A malfunction resulting from test item abuse, unrealistic operation
conditions or accident;
e.
Actual or incipient malfunctions detected or corrected during initial
technical inspections and incipient malfunction detected during final
technical inspection.
40.6.1.2 The following are considered as reliability failures:
a.
A failure detected and/or corrected during the correction of another
failure provided the failures are totally unrelated.
b. Corrected incipient malfunctions not covered by 40.6.1.1 examples 2 and 5.
c. Failures resulting from lack of clarity of instruction or other fault in
the maintenance test package.
40.6.2 Failure Modes. The following are two typical failure modes for use in
assessment of mission reliability failures. These failure modes are subject to
performance degradation (see 40.6.3).
a. Breechblock cannot be closed/opened.
b. Gun will not fire.
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