More info
Description / Abstract:
Purpose of this Order.
a. We've written this order to supplement
RTCA/DO-254, and give you guidance for approving both simple and
complex custom micro-coded components. This guidance applies to
airborne systems and equipment, and the airborne electronic
hardware of those systems when you work in a certification project
(type, supplemental, amended, and amended supplemental) or
technical standard order authorization. This order accepts
RTCA/DO-254 as the means by which an applicant can seek FAA
approval. If an applicant proposes another means, including
achieving acceptable design assurance for these components by using
verification and/or architectural strategies at the system or
equipment level, we may need to develop more guidance (such as
issue papers) on a project-byproject basis.
b. If an applicant follows RTCA/DO-254 for
level D components, we don't need to review the life cycle data.
However, we will review it if the applicant chooses to use their
existing design assurance practices, as allowed by Advisory
Circular (AC) 20-152, RTCA, Inc., Document RTCA/DO-254, Design
Assurance Guidance For Airborne Electronic Hardware, Paragraph
1.b. Refer to FAA part- specific policy for exceptions.