DO-248B

DO-248B is a document published by RTCA, Incorporated. It provides clarification of the guidance material in DO-178B. Like DO-178B, it is a joint undertaking with EUROCAE and the document is also published as ED-94B "Final annual report for clarification of ED-12B"

The clarification may accomplish any or all of the following purposes:

• resolution of content errors in DO-178B
• clarification of a specific section or topic of DO-178B
• resolution of an inconsistency between DO-178B and any other relevant civil aviation standards

Outline of contents

DO-248B contains the following:

• 12 errata to DO-178B
• 76 frequently asked questions (FAQ)
• 15 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/ED-12A and DO-178B/ED-12B Guidance for Meeting the Objective of Structural Coverage
  • Service History Use—Rationale for DO-178B/ED-12B, Section 12.3.5a through k
  • 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
  • Object Code to Source Code Traceability Issues
  • Definitions of Statement Coverage, Decision Coverage, and Modified Condition/Decision Coverage (MC/DC)
  • Partitioning Aspects in DO-178B/ED-12B
  • Relationship Between Regression Testing and Hardware Changes

See also

• DO-178B