2Presentation Overview AC , Design Assurance Guidance for Airborne Electronic Hardware, RTCA/DO-254Policy Memo for RTCA/DO-254RTCA/DO-254 training courseAuthorization of DERs for complex electronic hardware (CEH)
3What is the background with developing and recognizing RTCA/DO-254? AC , Design Assurance Guidance for Airborne Electronic Hardware, RTCA/DO-254What is the background with developing and recognizing RTCA/DO-254?RTCA SC-180 lasted 7 years and held 25+ meetings.RTCA/DO-254 published April 19, 2000.FAA recognition of DO-254 for programmable logic devices (PLDs) via issue papers.FAA published AC on June 30, 2005.Process took 12 years!
4Why did it take so long to publish and recognize RTCA/DO-254? AC , Design Assurance Guidance for Airborne Electronic Hardware, RTCA/DO-254Why did it take so long to publish and recognize RTCA/DO-254?Scope problems: What is complex hardware? (LRUs, circuit board assemblies, custom micro-coded components, COTS, etc.)Hardware design assurance levels.Unofficial disagreement by industry on release of RTCA/DO-254.
5AC 20-152, Design Assurance Guidance for Airborne Electronic Hardware, RTCA/DO-254 What types of complex electronic hardware are covered by the AC ?Complex custom micro-coded components:Programmable logic devices (PLDs)Field programmable gate arrays (FPGAs)Application specific integrated circuit (ASICs)Other similar electronic devices
6What design assurance levels does AC 20-152 recognize for RTCA/DO-254? AC , Design Assurance Guidance for Airborne Electronic Hardware, RTCA/DO-254What design assurance levels does AC recognize for RTCA/DO-254?Complex devices supporting Level A, B, & C functions.For Level D devices, applicants can use:If RTCA/DO-254 is used, then FAA review of lifecycle data is not necessary.Existing manufacturing design assurance practices (contingent on ACO agreement).
7What about microprocessors? AC , Design Assurance Guidance for Airborne Electronic Hardware, RTCA/DO-254What about microprocessors?Recognize alternate methods to ensure COTS microprocessors perform intended functions.RTCA/DO-254 may be used for custom developed microprocessors.Lack of guidance for to address advance design features (cache, pipelining, extra micro-coded instructions, etc.) in COTS microprocessors.Ongoing FAA/AVSI (Aviation Vehicle Systems Institute) research project for COTS microprocessors.
8Policy Memo/Order for using RTCA/DO-254 How is the FAA going to harmonize with EASA for guidance on DO-254/ED-80?Draft CAST paper P#86, Clarifications on the use of RTCA/DO-254, Design Assurance Guidance for Airborne Electronic Hardware.FAA & EASA intend to publish equivalent guidance material.
9Policy Memo/Order for using RTCA/DO-254 How is the FAA going to clarify the technical issues when using DO-254?Draft policy memo addresses the following technical issues:Modifiable devices, verification & validation processes, traceability, configuration management, etc.Schedule for release of policy memo by September, 2006.Plan to incorporate policy memo into FAA Order.
10Training for RTCA/DO-254What about new training for complex electronic hardware and RTCA/DO-254?Proposed FY06 business plan nomination to develop FAA course for RTCA/DO-254 (similar to DO-178B course for software).Course development contingent on budget resources.
11Authorization of DERs for CEH What about authorization of DERs in the complex electronic hardware (CEH) technical area?Point of contact is Kevin Kendall, AIR-140.Draft policy memo under coordination to addressQualificationsLimitationsTSO approval of CEHPolicy Memo will be incorporated in future revisions to Order B, Order , and Order
12Authorization of DERs for CEH What about some specific qualifications under consideration for CEH?Thorough working knowledge and understanding of RTCA/DO-254.Understanding of and experience with DO-254 hardware life cycle processes and data required for certification.Experience with different kinds of CEH design, such as Application Specific Integrated Circuits (ASIC), Programmable Logic Devices (PLD), and Field Programmable Gate Arrays (FPGA) design.
13Authorization of DERs for CEH Familiarity with Hardware Description Languages that are used for programming CEH, and an understanding of the types of verification required for use of such languages .Experience with complex electronic hardware verification process activities, including reviews, analyses, and testing.Familiarity with complex electronic hardware modification processes, including determination of change impact analyses, regression analyses and testing.
14Authorization of DERs for CEH What are some delegation limitations under consideration for CEH?Approval of the Plan for Hardware Aspects of Certification (PHAC), Top Level Drawing, and the Hardware Accomplishment Summary (HAS) will be reserved for approval by the ACO.For some systems and complex electronic hardware requiring design assurance Level A or B, the verification and validation data may also be reserved for approval by the ACO.
15Special thanks to national FAA team members! FAA team for AC :Transport Airplane Directorate: Gregg Bartley, Will Struck, & Varun KhannaRotorcraft Directorate: Jorge CastilloEngine Directorate: Gary HoranSmall Airplane Directorate: Robin Sova & Wes RyanChicago ACO: Brenda OckerLos Angeles ACO: Tom PhanWichita ACO: Gerry Pilj & Ruth Hirt
16Comments to: John.Lewis@faa.gov Questions?zzzzComments to: