FAA Order 8110.105
American regulatory order
FAA Order 8110.105B, Airborne Electronic Hardware Approval Guidelines is an explanation of how Federal Aviation Administration (FAA) personnel can use and apply the publication
DO-254, Design Assurance Guidance for Airborne Electronic Hardware, RTCA,
and the additional guidance and clarifications in advisory circular
AC 20-152A, Development Assurance for Airborne Electronic Hardware, FAA.
The order additionally identifies
AC 00-72, Best Practices for Airborne Electronic Hardware Design Assurance Using EUROCAE ED80() and RTCA DO 254(), FAA.
FAA Order 8110.105B defines a consistent process for certification authorities to follow when reviewing (auditing) airborne electronic hardware (AEH). To this end, this order concentrates on standardizing the number of audits to conduct and how much evidence to evaluate. This order includes worksheets that may be used to assess standardized certification authority Level of Involvement (LOI) in hardware projects.
Applicants developing under AC 20-152()/DO-254 may reference Order 8110.105B to be more informed of the number of certification liaison reviews to support and how much data is expected from them, determined by the level of involvement assessed by the certification authority.
Revision History
Revision B canceled 8110.105A and 8110.105, Simple and Complex Electronic Hardware Approval Guidance, which had different intent and content. The two cancelled revisions originally supplemented RTCA DO-254() by explaining to private users of that standard how FAA aircraft certification staff could use that document "when working on type certification projects". They covered "specific topics of interest to the FAA that may go above and beyond content specific to DO-254." As such, these revisions were recommended for reference by developers applying under DO-254() for certification of electronic hardware designs, including those implemented in "custom micro-coded components" (ie., ASICs, PLDs, or FPGAs). Of particular interest was clarification of the guidance in DO-245 on approving simple and complex components. The original publication also gave instructions on assessing level of FAA involvement in hardware projects and the means of staging involvement in a standardize series of reviews; however, the 2017 revision removed these instructions.
The order now only gives limited instructions on the Airborne Electronic Hardware Review Process to FAA staff and designees.
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