The Advisory Circular AC 20-115, Airborne Software Assurance, identifies the RTCA published standard DO-178 as defining a suitable means for demonstrating compliance for the use of software within aircraft systems. The present revision C of the circular identifies DO-178 Revision C as the active revision of that standard. This AC calls attention to DO-178C as a means, but not the only means to secure FAA approval of software. Earlier revisions of the AC were brief, serving little more than to call attention to active DO-178 revisions. Revision C is considerably longer, giving guidance in how to transition from DO-178 revision B to C .AC 20-115C  History of AC 20-115 Revision Year SummaryAC 20-115A Called attention to RTCA DO-178A.AC 20-115B 1993 Called attention to RTCA DO-178B.AC 20-115B  AC 20-115C 2013 Calls attention to RTCA DO-178C. Provides guidance for transition from Rev B to Rev C.AC 20-115C AC 20-115D2017Minor updates largely to harmonize with EASA guidance.  External links AC 20-115C , Airborne Software Assurance
The Advisory Circular AC 20-115, Airborne Software Assurance, identifies the RTCA published standard DO-178 as defining a suitable means for demonstrating compliance for the use of software within aircraft systems. The present revision D of the circular identifies DO-178 Revision C as the active revision of that standard. This AC calls attention to DO-178C as a means, but not the only means to secure FAA approval of software. The earliest revisions of the AC were brief, serving little more than to call attention to active DO-178 revisions. The AC revisions C and D are considerably longer, giving guidance in modifying and re-using software previously approved using DO-178 , DO-178A, or DO-178B (preceding revisions of the DO-178 standard) .AC 20-115C , FAA, 2013. "This AC also establishes guidance for transitioning to DO-178C when making modifications to software previously approved using DO-178, DO-178A, or DO-178B." History of AC 20-115 Revision Year SummaryAC 20-115A Called attention to RTCA DO-178A.AC 20-115B 1993 Called attention to RTCA DO-178B.AC 20-115B , FAA, 1993. AC 20-115C 2013 Calls attention to RTCA DO-178C. Provides guidance for transition from Rev B to Rev C.AC 20-115C AC 20-115D2017Minor updates largely to harmonize with EASA guidance. AC 20-115D, FAA, 2017. "The technical content of this AC is as far as practicable harmonized with European Aviation Safety Agency (EASA) AMC 20-115D, equally based on ED-12C/DO-178C." External links AC 20-115D , Airborne Software Assurance
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C
D
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Earlier
The earliest
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Revision C is
The AC revisions C and D are
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how to transition from
modifying and re-using software previously approved using
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revision B to C
, DO-178A, or DO-178B (preceding revisions of the DO-178 standard)
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, FAA, 2013. "This AC also establishes guidance for transitioning to DO-178C when making modifications to software previously approved using DO-178, DO-178A, or DO-178B."
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, FAA, 1993.
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AC 20-115D, FAA, 2017. "The technical content of this AC is as far as practicable harmonized with European Aviation Safety Agency (EASA) AMC 20-115D, equally based on ED-12C/DO-178C."
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20-115C
20-115D