For persons already familiar with DO-254 facts, this paper explains common mistakes deploying DO254 and how to prevent DO-254 problems. Helpful to reduce DO-254 costs while minimizing DO-254 risks.
The Impact of RTCA DO-178C on. Software Development. By following DO-178C, organizations can implement aeronautical software. With clear and consistent ties to existing systems and safety processes and address emerging trends and technologies across the industry. Executive Summary. Products from Curtiss-Wright, Aitech Defense Systems, OnTime Networks, AP Labs, Targa Systems Division, SIE Computing Solutions, Inc., Parallels Inc., wolfSSL INC. DO-254 Training: Design Assurance Guidance for Airborne Electronic Hardware SPOTLIGHT Spotlight on Volunteers: SC-229/WG-98 Publishes Emergency Locator Transmitter Standards and Enters A New Phase For RTCA Committees.
As all gamblers know, the number “13” is generally considered “unlucky”. When undergoing pilot training ground school, the author of this whitepaper often heard the refrain “There are old pilots, and bold pilots; but there are no old and bold pilots.” In avionics development, safety is clearly about preparation and execution, not luck nor improvisation. To avoid the most common DO-254 mistakes, preparation should begin by reading related requirements and objectives on DO-254. Then read this whitepaper to understand how to promote the best possible “luck” via good preparation and execution which avoids these unlucky 13 DO-254 mistakes.
DO-254 is often called “DO-178C’s Little Brother” and unfortunately it does bear too much resemblance to software. And you all know hardware development is virtually identical to software, surely? Not at all, and therein lies the source of the most significant mistakes with DO-254: thinking DO-178 processes fully and equally apply. DO-254 is truly subjective, vague, and software-centric; yet avionics certification typically requires conformance combined with proven high quality and reliability. DO-254’s success is elusive and complaints abound from both sides of the certification aisle from suppliers and certifying agencies. This implies for the applicant a very tight monitoring and depth control on the procurement process, in particular when procuring commercial-off-the–shelf avionics. In truth, DO-254 is rarely cost-effective in its first usage. However, the competitive landscape of avionics, both commercial and military, is just that: competitive and focused upon long-term cost effectiveness, long equipment lifetime, and continual safety. Therefore, the goal is to achieve DO-254 compliance while meeting (and hopefully surpassing) the competition. Such success requires achieving certification via the most expedient and productive path possible, while avoiding any major mistakes.
Remember, bad luck is not the cause of mistakes, just as those same mistakes are not prevented through good luck. Mistakes are the result of a lack of understanding, planning, and neglecting to apply DO-254’s true intent. As a famous golfer (not quite as famous as Mr. Carson Mandic) once said after a particularly spectacular tournament win, “Me, Lucky? Hmmm … Luck is interesting: I’ve found that the more I practice, the luckier I become!” With this Whitepaper, it is hoped that your own “luck” increases with your successful DO-254 practice.
Free: Download Remaining 10+ Page Paper Here
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Design Assurance Guidance for Airborne Electronic Hardware
Latest version
April 19, 2000
Organization
Domain
Aviation electronics
Abbreviation
DO-254
ED-80
RTCA/DO-254, Design Assurance Guidance for Airborne Electronic Hardware is a document providing guidance for the development of airborne electronic hardware, published by RTCA, Incorporated.
The DO-254 standard was formally recognized by the FAA in 2005 via AC 20-152 as a means of compliance for the design of complex electronic hardware in airborne systems. Complex electronic hardware includes devices like Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (PLDs), and Application Specific Integrated Circuits (ASICs). The DO-254 standard is the counterpart to the well-established software standard RTCA DO-178B/EUROCAE ED-12B. With DO-254, the FAA has indicated that avionics equipment contains both hardware and software, and each is critical to safe operation of aircraft. There are five levels of compliance, A through E, which depend on the effect a failure of the hardware will have on the operation of the aircraft. Level A is the most stringent, defined as 'catastrophic' (e.g. loss of the aircraft), while a failure of Level E hardware will not affect the safety of the aircraft. Meeting Level A compliance for complex electronic hardware requires a much higher level of verification and validation than Level E compliance.
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2Process overview
System aspects of hardware design assurance[edit]
The main regulations which must be followed are requirements capturing and tracking throughout the design and verification process. The following items of substantiation are required to be provided to the FAA, or the Designated Engineering Representative (DER) representing the FAA:
Plan for Hardware Aspects of Certification (PHAC)
Hardware Verification Plan (HVP)
Top-Level Drawing
Hardware Accomplishment Summary (HAS)
Process overview[edit]
Hardware design life cycle[edit]
The hardware design and hardware verification need to be done independently. The hardware designer works to ensure the design of the hardware will meet the defined requirements. Meanwhile, the verification engineer will generate a verification plan which will allow for testing the hardware to verify that it meets all of its derived requirements.
Planning process[edit]
The planning process is the first step where the design authority (the company who develops the H/W and implements the COTS into its design) declares its approach towards the certification. At this point the PHAC (Plan for H/W Aspects of Certification) is presented to the authorities (EASA, FAA..). In this plan, the developer presents its approach and how DO-254 is implemented. The PHAC is submitted as part of the authorities 1st stage of involvement (SOI#1).
Hardware design processes[edit]
Rtca Do 254 Free Download For Pc
Requirements Capture
Conceptual Design
Detailed Design
Implementation
Verification
Transfer to production
Validation and verification process[edit]
The validation process provides assurance that the hardware item derived requirements are correct and complete with respect to system requirements allocated to the hardware item.
The verification process provides assurance that the hardware item implementation meets all of the hardware requirements, including derived requirements.
A widely used industry mnemonic for the difference is:
Validation - designing the right system!
Verification - designing the system right!
Additional considerations[edit]
Configuration Management Process
Process Assurance
Certification Liaison Process
Hardware Design Life Cycle Data
Use of Previously Developed Hardware
Commercial-Off-The Shelf (COTS) Components Usage
Product Service Experience
Tool Assessment and Qualification
Appendix A. Modulation of Hardware Life Cycle Data Based on Hardware Design Assurance Level
Appendix B. Design Assurance Considerations for Level A and B Functions
Appendix C. Glossary of Terms
Appendix D. Acronyms
Important considerations[edit]
Section 1.6 (Complexity Considerations) presents the definition for Simple Device.
Table 5-1 (Typical ASIC/PLD Process Mapping) presents a process mapping very useful for practical application considering the scope of AC 20-152
Appendix B (Design Assurance Considerations for Level A and B Functions) - the longest chapter of the document - prepares the future of embedded electronics, paving the way for advanced design and verification methods, well known to the outside world, but fairly new for the avionics industry.
Resources[edit]
Rtca Do 254 Free Download
FAR Part 23/25 §1301/§1309
FAR Part 27/29
AC 23/25.1309
RTCA DO-254
Rtca Do 254 Document
Certification in Europe[edit]
Replace FAA with EASA, JAA or CAA
Replace FAR with JAR
Replace AC with AMC (Acceptable Means of Compliance) or AMJ (Advisory Material Joint)
See also[edit]
DO-178C (similar to DO-254, but for software)
External links[edit]
DO-254 Docs & Papers
DO-254 Web Sites
The DO-254 User's Group http://www.do254.com/ has chapters in the US and in EU. While the charter of this group is not to write a DO-254 “A” standard, participants exchange about needs, usability of emerging technologies, dedicated solutions, training, good practices for expertise, and also provide input to the certification authorities for consideration as means of compliance in addition to the current regulatory materials. The US chapter is Chaired by Tammy Reeve, President of Patmos Engineering Services.
RTCA.org is where the publication can be acquired
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