DO-248C, ''Supporting Information for DO-178C and DO-278A'', published by
RTCA, Incorporated
RTCA, Inc. (formerly known as Radio Technical Commission for Aeronautics) is a United States non-profit organization that develops technical guidance for use by government regulatory authorities and by industry. It was founded in 1935 and was re-in ...
, is a collection of
Frequently Asked Questions and Discussion Papers addressing applications of
DO-178C
DO-178C, Software Considerations in Airborne Systems and Equipment Certification is the primary document by which the certification authorities such as FAA, EASA and Transport Canada approve all commercial software-based aerospace systems. The d ...
and
DO-278A in the safety assurance of software for aircraft and software for
CNS/
ATM systems, respectively. Like DO-178C and DO-278A, it is a joint RTCA undertaking with
EUROCAE
The European Organisation for Civil Aviation Equipment (EUROCAE) deals exclusively with aviation standardisation, for both airborne and ground systems and equipment. It was created in 1963 in Lucerne, Switzerland by a decision of the European Civi ...
and the document is also published as ED-94C, ''Supporting Information for ED-12C and ED-109A''. The publication does not provide any guidance additional to DO-178C or DO-278A; rather, it only provides clarification for the guidance established in those standards. The present revision is also expanded to include the "Rationale for DO-178C/DO-278A" section to document items that were considered when developing DO-178B and then DO-178C, DO-278A, and
DO-330, as well as the supplements that accompany those publications (
DO-331,
DO-332,
DO-333).
Corresponding with the releases of DO-178C and DO-278A, the present revision, DO-248C, is an update to the previous revision DO-248B, ''Report for Clarification of DO-178B "Software Considerations in Airborne Systems and Equipment Certification"''. While new FAQs and Discussion Papers have been added, most of the FAQs and Discussion Papers of DO-248C are carried over from DO-248B. Some of these items have been marked as deleted or updated as the subjects were addressed by the releases of DO-178C, DO-330, supplements, or other publications. An errata section is not included as the release of DO-178C addressed the errata of DO-178B and any errata of DO-178C have yet to be published.
Initially, this publication was an annual clarification report, DO-248B (2001) was preceded by DO-248A (2000) and DO-248 (1999).
[Rierson, page 52-53.]
Outline of contents
DO-248C contains the following:
*Rationale for each process objective of DO-178C/DO-278A
*84 frequently asked questions (some noted as either deleted, removed or addressed by other publications)
*21 discussion papers
:#Verification Tool Selection Considerations
:#The Relationship of DO-178B/ED-12B to the Code of Federal Regulations (CFRs) and Joint Aviation Requirements (JARs)
:#The Differences Between DO-178A and DO-178B Guidance for Meeting the Objective of Structural Coverage
:#Service History Use—Rationale for DO-178C
:#Application of Potential Alternative Methods Compliance for Previously Developed Software (PDS)
:#Transition Criteria
:#Definition of Commonly Used Verification Terms
:#Structural Coverage and Safety Objectives
:#Certification With Known Software Problems
:#Considerations Addressed When Deciding to Use Previously Developed Software (PDS)
:#Qualification of a Tool Using Service History
''(Removed, see DO-330)''
:#Object Code to Source Code Traceability Issues
:#Definitions of Statement Coverage, Decision Coverage, and Modified Condition/Decision Coverage (MC/DC)
:#Partitioning Aspects in DO-178C/DO-278A
:#Relationship Between Regression Testing and Hardware Changes
:#Cache Management
:#Usage of Floating-Point Arithmetic
:#Service Experience Rationale for DO-278A
:#Independence in DO-178C/DO-278A
:#Parameter Data Items and Adaptation Data Items
:#Clarification on Single Event Upset (SEU) as It Relates to Software
References
{{DEFAULTSORT:Do-248c
RTCA standards