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Requirements capture for on-board equipment development
(in a form of UAC standards project)

Branches of activities/Organizing functions/Requirements capture for on-board equipment development/

Fig. A.1. A graphic structure of the document of General requirements on OBE development (UAC standards project).
Fig. A.1. A graphic structure of the document of General requirements on OBE development (UAC standards project).
A graphic structure of the document, which is a UAC standards project and describing General requirements on OBE development, is shown at fig. A.1. A connection of this document with SAE ARP4754a (Guidelines for Development of Civil Aircraft and Systems), which was released by the Federal Aviation Administration of United States of America (FAA), is shown on fig. A.2.

Below there is a summary of the General requirements for the OBE development according to the volumes.
Fig. A.2. A connection between General requirements for the OBE development (UAC standards project) with SAE ARP4754a (Guidelines for Development of Civil Aircraft and Systems, FAA).
Fig. A.2. A connection between General requirements for the OBE development (UAC standards project) with SAE ARP4754a (Guidelines for Development of Civil Aircraft and Systems, FAA).

Volume 1.1. General provisions. This volume presents the structure of the standard, the table of contents of all of its constituent volumes, definitions and abbreviations that are common to all sections of the standard, as well as a determination of the regulatory basis of OBE, systems and components development.

Volume 2.1. OBE development planning. This volume describes the planning process of the aircraft OBE development. The place of each stage in the lifecycle of the OBE, the goal of phase, the participants and their interactions are determined. The structure of the planning phase documentation, as the project (project charter, project management plan, schedule plan and others) and technical (development plans, safety and reliability assurance, verification, validation, configuration management, quality assurance and others), is shown.

Volume 2.2. Interaction with Suppliers. The volume describes all aspects of the interaction between Customer and Suppliers of OBE equipment, systems, hardware and software. The recommendations on the selection of the Suppliers are listed; measures on coordination of activities of the Supplier and the equipment’s Customer. Instructions on creation of the equipment supplier’s technical specifications are given. >>>
>>>  Volume 3.1. OBE development lifecycle. This volume specifies the stages of the aircraft OBE development lifecycle. OBE design processes, OBE development integrated processes, OBE development project management are clarified.

Volume 3.2. OBE functions. The book contains the functional and technical requirements for the modern OBE developed on the basis of the IMA technology. The main functions tree is shown. In addition, the requirements are stated to the OBE on reliability and fault safety, as well as on resistance to the external effects in accordance with R4761 and KT-160 standards. These requirements are the basis for the creation of the OBE Standard Specification and Standard FHA.

Volume 3.3. OBE architecture with IMA components and separate systems design. The volume describes the recommended technology of the OBE design as in general, as well as the technology of systems design that are part of the OBE. The proposed design technology allows obtaining the design solutions for the OBE architecture, built on the basis of Integrated Modular Avionics with implementation of the modern AFDX (ARINC 664 Part 7) and CAN (ARINC 825) networks.

Volume 3.4. Systems and their SW and HW components development. This volume specifies the systems development process. Great attention is paid to the issues of software development of all levels in accordance with the KT-178B, including the software for IMA systems. Recommendations are given on end-to-end technology of hardware development, starting from the stage of conceptual design and ending with acceptance test. The processes of hardware and software integration, as well as a system and the aircraft integration, are described in detail.

Volume 3.5. On-board operation inspection means design. This volume includes the recommendations on the specification development on built-in means of inspection of the OBE electronic equipment and the minimum set of requirements to the various systems on the built-in inspection process arrangement. The document also presents the recommended ideology of the OBE maintenance with the usage of on-board maintenance system.

Volume 4.1. Reliability and fault safety. This volume shows to the OBE set and certain systems developers how to arrange the process of reliability assessment in accordance with the R4761. All the safety assessment processes in accordance with the R4761 are shown. This document highlights the output documentation development process, and also the formats of the output. Aspects of the human factor influence on the OBE fault safety are shown in detail. The causes of the crew’s functions failure, as well as measures for their effective parry at the OBE development stage are considered. The evaluation criteria of the cockpit various concepts and aircraft control and navigational equipment are given. >>>
>>>  Volume 4.2. Validation. This volume describes the requirements and methodological approaches to the validation process of requirements and OBE. There is also the description of what should be included in the validation plan. Recommendations described in this book can provide the integrity and validity of requirements and also their compliance to the airworthiness standards.

Volume 4.3. Verification. This document provides the information to participants of the work on the on-board equipment set about the verification process of implemented functions of the OBE. This document is used by the aircraft Developer/OBE Integrator at the following levels of the OBE development:
  • Components (SW and HW) integration of equipment (IMA system integration).
  • Equipment and OBE systems integration.
  • OBE equipment and systems integration at the aircraft level.
Volume 4.4. Configuration management. This book contains the recommendations and management technology of the OBE configuration. Configuration management of SW and HW, development tools, configuration management at the level of certain elements, and as well of the whole complex level in general at all the stages of the development lifecycle in accordance of AR-21, KT-178B, KT-254, R-4754 are highlighted.

Volume 4.5. Development quality assurance. Since it’s necessary to guarantee the correctness of the lifecycle processes of the on-board equipment set, this volume includes the target, the scope of work and the development quality assurance process documentation (QA plans, procedures, checklists, a list of the process participants, the responsibilities and order of interaction of the development quality assurance process with other development processes of the OBE creation). The compliance with the recommendations of this volume ensures the compliance of all processes and data of the OBE lifecycle to the technical requirements of the project.

Volume 4.6. Certification support. This volume includes a description of the composition and the right order of the certification work performed during the type certification of an aircraft at the IAC AR, EASA and FAA during the proof of compliance with the certification basis for equipment and systems of the set.

Volume 5.1. OBE documentation. This volume contains the full structure, hierarchy, requirements and the relationship between the documents developed by all participants of the on-board equipment development process on the basis of IMA for an advanced aircraft, including the processes of design, testing and certification.
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