The difficulties that have been identified are the DO-178 requirements for evidence and
rigorous verification...
Systematic records of accomplishing each of the
objectives and guidance are necessary. A documentation trail must exist
demonstrating that the development processes not only were carried out, but also
were corrected and updated as necessary during the program life cycle. Each
document, review, analysis, and test must have evidence of critique for accuracy and
completeness, with criteria that establishes consistency and expected results. This is
usually accomplished by a checklist which is archived as part of the program
certification records. The degree of this evidence varies only by the safety criticality of
the system and its software.
Acknowledgement: Leslie Johnson's, Practitioner's Discussion of DO-178B.
Original source on http://stsc.hill.af.mil/crosstalk/1998/oct/schad.asp
