FAA Order 8110.105

Airborne Electronic Hardware Approval Guidelines
	FAA Publication
Abbreviation	FAA Order 8110.105
Year started	2008
Latest version	B; 2024
Organization	Federal Aviation Administration
Domain	Avionics, type certification
Website	faa.gov

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 airborne electronic hardware (AEH). This order includes worksheets that may be used to assess standardized certification authority Level of Involvement (LOI) in hardware projects.^[2]

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.^[2]

^ Cite error: The named reference Spitzer2015e was invoked but never defined (see the help page).
^ ^a ^b Tammy Reeve (May 14, 2024). "Order 8110.105B (and the Evolution of Guidance Surrounding DO-254)". Airworthiness Certification Services. Retrieved 2024-10-23. Order 8110.105B now primarily focuses on how many reviews and how much data the auditors expect to see, which is determined by something called the level of involvement (LOI). The LOI calculation is influenced by both the Design Assurance Level (DAL) and other project criteria. Appendix C of Order 8110.105A included worksheets that helped calculate the LOI. Appendix B of Order 8110.105B covers the same content but adds the use of COTS and COTS IP as factors in these calculations. For teams who want to understand what external reviews you'll be subject to and why, Order 8110.105B is a great document to review.

[Spitzer2015e-1] Cite error: The named reference Spitzer2015e was invoked but never defined (see the help page).

[ACS-2] Tammy Reeve (May 14, 2024). "Order 8110.105B (and the Evolution of Guidance Surrounding DO-254)". Airworthiness Certification Services. Retrieved 2024-10-23. Order 8110.105B now primarily focuses on how many reviews and how much data the auditors expect to see, which is determined by something called the level of involvement (LOI). The LOI calculation is influenced by both the Design Assurance Level (DAL) and other project criteria. Appendix C of Order 8110.105A included worksheets that helped calculate the LOI. Appendix B of Order 8110.105B covers the same content but adds the use of COTS and COTS IP as factors in these calculations. For teams who want to understand what external reviews you'll be subject to and why, Order 8110.105B is a great document to review.

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