"[1] As such, these revisions were recommended for reference by developers applying under DO-254() for certification of electronic hardware designs,[3] including those implemented in "custom micro-coded components" (ie., ASICs, PLDs, or FPGAs).

Additionally, Order 8110.105 originally addressed some of the omissions and clarification needs identified by the Certification Authorities Software Team in their position paper, CAST-31, and as such informs electronic hardware developers of interests beyond those presently expressed in DO-254.

The order is now only instructions for FAA Aircraft Certification Service personnel to use and apply on the Airborne Electronic Hardware Review Process.

[6] With respect to DO-254(), a device is classified as simple if comprehensive inspection or testing alone can demonstrate that it is reasonably free of design defects or errors and has deterministic behavior.

"A hardware item is considered simple if a comprehensive combination of deterministic tests and analyses can ensure correct functional performance under all foreseeable operating conditions with no anomalous behavior."

[10] Advisory Circular 20-152 recognizes the guidance in DO-254 as a suitable means for demonstrating compliance for the use of complex custom micro-coded components within aircraft systems.

Three primary chapters are clarification of The particular interest in topics applicable to simple electronic hardware alone was the reduction of documentation submitted to support certification.

Rather than providing any list of expected submissions, AC 00-72 now only advises simple hardware applicants that "Due to the simplicity of the device, the life cycle data is reduced.