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Testing baseline configuration audit (TBCA) |
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|  MIL-S-18471G(AS)
4.3.2.4 Testing baseline configuration audit (TBCA). A testing base-
line configuration audit (TBCA) shall be conducted by the contractor, with
a procuring activity representative in attendance. The audit shall be
conducted in accordance with MIL-STD-1521, within forty-five days of the
completion of the EPA-II review. The objective of the TBCA shall be to
formally examine the EPA-II ejection seat assembly against its technical
documentation in order to establish a testing baseline for DT-IB and DT-II
testing. This documentation package, as a minimum, shall include a complete
set of level 2 drawings prepared in accordance with DOD-D-1000 (see 6.2.2).
The approved documentation package, as a result of the TBCA, shall constitute
the approved testing baseline configuration.
4.3.2.5 Materials and processes review. The procuring activity will
conduct an in-depth review of the planned materials and processes to determine
compliance with 3.1.1. In preparation for the review, the contractor shall
ensure that each drawing has complete materials and process call-outs. In
addition, the contractor shall prepare a parts list or parts tree by subassembly
and assembly breakdown and listing thereon, for each part, all applicable
drawing numbers.
4.3.2.6 Critical components analyses review. The contractor shall document
the results of the critical component stress analysis, tolerance analysis, and
environmental study (see 3.4.1.1.). The results of these analyses shall be
made available to the procuring activity at the critical components analyses
review in a manner which will permit the determination of the adequacy of the
design of the critical components to meet worst case stresses, acceptable
limits for worst case tolerances, and the ability to effectively withstand and
operate under the effects of extreme environmental conditions. In addition,
evidence shall be made available by the contractor during the review to clearly
show how the results of these analyses affect or will affect the design, test,
and production of the escape system to ensure that it meets the requirements
of this specification
4.3.3 Pre DT-IB design review. The procuring activity will conduct a
pre DT-IB design review to ensure that components and subsystems of the escape
system design are compatible with the aircraft and the fully-equipped aircrew-
member, and are in accordance with the specification requirements herein.
Successful completion and approval of this review and establishment of the
testing baseline are prerequisites for the commencement of the final engineering
demonstration and validation, DT-IB tests (see 4.4), and the component and
subsystem full scale development, DT-IIA tests (see 4.5). At the pre DT-IB
design review, the contractor shall present a summary of all significant
findings and results of the following:
Tests and inspections of 4.3.
a.
b.
Engineering proofing article I (EPA-X) review (see 4.3.1).
c.
Engineering proofing article II (EPA-II) review (see 4.3.2).
Additionally, the contractor shall summarize the remedial actions planned for
all outstanding design conformance inspection deficiency reports from previous
events. The procuring activity will determine, from the information presented,
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