Faa Job Aid Software4/22/2021
The interface to the certification authority is also handled by the quality assurance process.Find sources: DO-178B news newspapers books scholar JSTOR ( June 2010 ) ( Learn how and when to remove this template message ).
In the United States, the introduction of TSOs into the airworthiness certification process, and by extension DO-178B, is explicitly established in Title 14: Aeronautics and Space of the Code of Federal Regulations (CFR), also known as the Federal Aviation Regulations, Part 21, Subpart O. RTCA published the document as RTCADO-178B, while EUROCAE published the document as ED-12B. Error or loss of critical function required to safely fly and land aircraft. Safety attributes in the design and implemented as functionality, must receive additional mandatory system safety tasks to drive and show objective evidence of meeting explicit safety requirements. Typically IEEE STD-1228-1994 Software Safety Plans are allocated and software safety analyses tasks are accomplished in sequential steps (requirements analysis, top level design analysis, detailed design analysis, code level analysis, test analysis and change analysis). These software safety tasks and artifacts are integral supporting parts of the process for hazard severity and DAL determination to be documented in system safety assessments (SSA). The certification authorities require and DO-178B specifies the correct DAL be established using these comprehensive analyses methods to establish the software level A-E. Any software that commands, controls, and monitors safety-critical functions should receive the highest DAL - Level A. It is the software safety analyses that drive the system safety assessments that determine the DAL that drives the appropriate level of rigor in DO-178B. The system safety assessments combined with methods such as SAE ARP 4754A determine the after mitigation DAL and may allow reduction of the DO-178B software level objectives to be satisfied if redundancy, design safety features and other architectural forms of hazard mitigation are in requirements driven by the safety analyses. Therefore, DO-178B central theme is design assurance and verification after the prerequisite safety requirements have been established. The phrase with independence refers to a separation of responsibilities where the objectivity of the verification and validation processes is ensured by virtue of their independence from the software development team. In some cases, an automated tool may be equivalent to independence. However, the tool itself must then be qualified if it substitutes for human review. Processes are described as abstract areas of work in DO-178B, and it is up to the planners of a real project to define and document the specifics of how a process will be carried out. On a real project, the actual activities that will be done in the context of a process must be shown to support the objectives. These activities are defined by the project planners as part of the Planning process. Once an activity within a process has been defined, it is generally expected that the project respect that documented activity within its process. Furthermore, processes (and their concrete activities) must have well defined entry and exit criteria, according to DO-178B, and a project must show that it is respecting those criteria as it performs the activities in the process. There are many possible and acceptable ways for a real project to define these aspects. This can be difficult the first time a company attempts to develop a civil avionics system under this standard, and has created a niche market for DO-178B training and consulting. Faa Job Aid Software Archive And RevisionThe configuration management process typically provides archive and revision identification of.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |