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Engineering proofing article I (EPA-I) review |
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|  MIL-S-18471G(AS)
by the contractor and which are acceptable to the procuring
activity. Subsequently, loading shall be incrementally increased
to establish safety margins at failure. Loads carried by all
critical load carrying members shall be measured and recorded.
Test set-up, loadings, and failures shall be documented
photographically. Post-test design changes shall necessitate
rerunning static load tests.
c. Aircraft canopy and escape path clearance subsystem tests. Four
ground level, zero airspeed tests shall be conducted, two utilizing
the redundant primary mode and two utilizing the automatic backup
--
mode. Tests shall be designed to represent worst case conditions.
Test data requirements and instrumentation shall comply with the
appendix.
d. Track tests. A series of six escape system track tests shall be
conducted with ejection speeds varied from zero to maximum and
including all applicable crossover speed modes. Test data
requirements and instrumentation shall comply with the appendix.
DT-IA track tests shall be conducted using available test
vehicles acceptable to the procuring activity.
e. Other types of tests, commensurate with the development risk
involved, shall be required for those components and subsystems
not already qualified in accordance with the requirements of
this specification and as determined by the initial qualification
status review (see 4.3.1.2).
f. The reviews and audits specified from 4.3.1 through 4.3.3.
4.3.1 Engineering proofing article I (EPA-I) review. The EPA-I review,
which includes the initial qualification status review (see 4.3.1.1) and
the escape system fit and compatibility evaluation (see 4.3.1.2), is a
preliminary evaluation of the escape system design and shall be completed
prior to commencement of DT-IA testing specified in 4.3.
4.3.1.1 Initial qualification status review (IQSR}. An IQSR shall be
conducted by the contractor with procuring activity participation ninety
days or less prior to the completion of the escape system fit and compatibility
.
evaluation, (see 4.3.1.2). The objective of this review shall be to establish
the acceptability of all components and subsystems for use in escape systems.
For this specification the term qualification refers to a component or
subsystem that meets the quality assurance requirements of this specification
or has been previously accepted for escape system service use in accordance
with its own military specification or standard. The IQSR shall:
a.
Identify those components or subsystems which shall be
subjected to qualification tests in accordance with other
military specifications or standards.
Identify those components and subsystems requiring
b.
qualification and which are not covered by existing military
specifications and are considered critical in accordance
with 3.4.1.1.
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