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Subject:
From:
Ada Marketing <[log in to unmask]>
Reply To:
Ada Marketing <[log in to unmask]>
Date:
Tue, 6 Feb 2001 11:13:18 -0500
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Ron,

"S. Ron Oliver" wrote:

> Do any of you have any experience with these certification processes?
>
> I have not, but I may have a need to come up to speed on them.  I would
> appreciate any information you can pass along.
>

We at Aonix have certifiable RTSs (e.g. certify them) for both Ada83 and
Ada95.  A brief overview of the FAA safety critical standard follows:

The FAA's DO-178B is heavily process oriented in specifying that the
development group clearly define all their development processes.  It can not
be exact since the standard does not know what type of system is being
developed for each case.  It is explicit in some testing areas and required
development artifacts though.  This is typically delivering all: requirements
specs., high level design, detailed design, source code, text cases, and test
results.  Traceability across all artifacts is required.  For testing the
development organization must show 100% coverage.  This is at the source code
level for Level B and lower and typically at the machine level for Level A.
Note that because of the traceability requirements, the test cases must be
traceable back to the requirements.  Thus quite often holes in coverage point
back to missing or vague requirements.  Thus to get full coverage it is common
to have to repeat testing and refine the requirements, design, etc. to get to
100%.  In both source and machine level coverage no dead code is allowed (this
is implicit in the 100% coverage).  Some special cases can exist where there
is a very small amount of code without coverage and these can be designated as
deactivated code, but now we are getting into low level particulars of the
standard.

I hope this helps.  Copies of the standard can be purchased through RTCA.



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