Interactive Guidance for Development of Safety Critical Avionics


(DO-178B/C - DO-254 - ABD0100 - ABD0200 - ARP-4754 - ARP-4761)

visualizing certification contexts

managing process complexity

tracing project progress

accelerating documentation issues

 

THE PROBLEM:

The following questions illustrate some challenges in designing and developing safety critical avionics.

Click picture to enlarge!

THE SOLUTION:

The following screenshots show the AET during use. The home screen of the AET enables a functional level selection. The functional level determines whether an aircraft function, system or equipment is going to be designed or developed. The requirements for a functional level arise from the next higher level. The navigation into a more detailed view occurs via "smart-tags".

1. Functional Levels

INTERNATIONAL STANDARDS AND SPECIFIC DIRECTIVES:

ARP 4761 (Aerospace Recommended Practice): Guidelines for conducting an industry accepted safety assessment.

ARP 4754 (Aerospace Recommendended Practice): Certification aspects of highly-integrated or complex systems installed on aircraft.

ABD0200 (Airbus Directive): Special effort needed in the early phases of the system design process to produce products for use in Airbus aircraft.

ABD0100 (Airbus Directive): General design requirements to be fulfilled by the suppliers of equipment for use in Airbus aircraft.

DO-178B/C (Design Organisation): Aspects of airworthiness certification that pertain to the production of software for airborne systems and equipment used on aircraft or engines.

DO-254 (Design Organisation): Design assurance guidance for airborne electronic hardware.

2. Life Cycle Processes

A life cycle processes survey (roles and phases) which depends on the functional level selection. During the individual phases all processes are performed concurrently. The integral processes (V+V, CM and QA) depend on the development process (Design). Processes run iteratively depending on the transition criteria specified during the planning phase.

 

3. Process-Workflow

The Process- and Activity-Workflow diagrams depend on the selected life cycle process. They are divided into blocks of columns which are composed according to their semantics. The two right-hand blocks of columns always refer the block of columns to their left. Relationships between the blocks of columns are represented by the position and colour of the elements. Most elements provide additional information in tooltips.

4. Activity-Workflow

The Aviation Engineering Tool guides users through the planning, development and certification phase of avionics engineering. In these phases, users have to follow a number of prescribed lifecycle processes in order to follow standards of avionics design and development and comply with airworthiness requirements. The AET gives an overview of all these processes in consideration of international standards like DO-178B and DO-254 as well as specific directives such as ABD 100 and ABD 200. It makes them convenient via step-by-step instructions. It provides additional information and custom-fit assistance for every process step and activity. The AET manages multiple roles – Design, Verification (V&V), Configuration Management (CM), Quality Assurance (QA) – and solves both general and role-specific user questions.

The AET includes:

  • objectives for lifecycle processes,
  • descriptions of process steps and activities for achieving those objectives,
  • mechanisms for progress monitoring as well as,
  • templates for the preparation of the required lifecycle documents.
  • The AET is likewise suitable for OEMs and SMEs. The AET is designed as a complement to existing engineering solutions and can easily be adapted to individual customer needs.

ADVANTAGES:
The AET...

  • reduces time and costs of certifying avionics
  • improves documentation quality
  • ensures that all assigned tasks can be executed in time
  • offers additional, custom-fit information for designing and developing safety critical avionics
  • tells the user what he has to do at every process-step
  • enables autonomous familiarization with avionics certification
  • supports the preparation of documents via tailored templates
  • visualizes complex processes, simplifies correlations and helps the user to stay orientated
  • guides the user precisely through the life cycle processes via step-by-step instructions
  • deals with both international standards as well as specific directives
  • prescribes which documents have to be produced in which sequence and at which moment
  • distinguishes between mandatory and optional documents
  • provides best practices
  • hides all irrelevant information from the user
  • knows which format certification documents must have
  • helps prevent too much documentation
  • is constantly updated
  • makes alterations to the standards transparent

Download Here you can download our latest AET product brochure.

 

 

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