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AIRCRAFT DATA NETWORK, PART 1, SYSTEMS CONCEPTS AND OVERVIEW

2019-06-20
CURRENT
ARINC664P1-2
The purpose of this document is to provide an overview of data networking standards recommended for use in commercial aircraft installations. These standards provide a means to adapt commercially defined networking standards to an aircraft environment. It refers to devices such as bridges, switches, routers and hubs and their use in an aircraft environment. This equipment, when installed in a network topology, can optimize data transfer and overall avionics performance.
Standard

OBSOLESCENCE MANAGEMENT STRATEGIES FOR COMMERCIAL AIRCRAFT

2019-05-14
CURRENT
ARINC662-1
The purpose of this document is to establish guidelines that should be observed during initial design, production, and maintenance of aircraft components, and to present short-term and long-term strategies to minimize the costs and impacts associated with decreasing availability of components.
Standard

TIMELY RECOVERY OF FLIGHT DATA (TRFD)

2021-08-06
CURRENT
ARINC681
The difficulty in locating crash sites has prompted international efforts for alternatives to quickly recover flight data. This document describes the technical requirements and architectural options for the Timely Recovery of Flight Data (TRFD) in commercial aircraft. ICAO and individual Civil Aviation Authorities (CAAs) levy these requirements. The ICAO Standards and Recommended Practices (SARPs) and CAA regulations cover both aircraft-level and on-ground systems. This report also documents additional system-level requirements derived from the evaluation of ICAO, CAA, and relevant industry documents and potential TRFD system architectures. It describes two TRFD architectures in the context of a common architectural framework and identifies requirements. This report also discusses implementation recommendations from an airplane-level perspective.
Standard

Special Considerations for the Application of IVHM to Autonomous Aircraft and Vehicles

2022-04-11
WIP
JA7214
This SAE Aerospace Recommended Practice (ARP) provides guidance to develop and assure validation and verification of IVHM systems used in autonomous aircraft, vehicles and driver assistance functions. IVHM covers a vehicle, monitoring and data processing functions inherent within its sub-systems, and the tools and processes used to manage and restore the vehicle’s health. The scope of this document is to address challenges and identify recommendations for the application of integrated vehicle health management (IVHM) specifically to intelligent systems performing tasks autonomously within the mobility sector. This document will focus on the core aspects of IVHM for autonomous vehicles that are common to both aerospace and automotive applications. It is anticipated that additional documents will be developed separately to cover aspects of this functionality that are unique to each application domain.
Standard

Low Collapse Pressure Hydraulic Filter Element – 380 L/min Flow, 3.5 MPa Collapse Pressure, Filtration Ratio = ?? at xx µm

2013-01-02
WIP
J2321/4
This specification sheet establishes requirements for a low collapse pressure configuration filter element of a specific configuration with a minimum filtration ratio of 75 for particles larger than ? μm when designed and tested in accordance with SAE J2321 and this specification sheet. Note: The efficiency and dirt capacity have not yet been determined..
Standard

Electric Park Brake Sizing

2017-10-16
WIP
J3158
The scope of this new recommended practice should include, but not necessarily be limited to: 1. Define vehicle operating conditions used to drive MOC-EPB actuator design and selection 2. Define brake corner operating conditions (e.g. temperature and state of burnish) used to drive MOC-EPB actuator design and selection 3. Define actuator operating conditions (e.g. temperature, voltage, current limit, and state of wear) used to drive MOC-EPB actuator design and selection 4. Define methodology for addressing part to part variation in performance
Standard

Considerations for future more electric aircraft electric power systems

2011-05-06
WIP
AIR6198
This activity is focused on more electric and all electric type power systems for air vehicles. The scope of which includes source, distribution and user contributions to electrical power quality, failure modes, coordination, system reliabilty and robustness, impacts of being flight critical and the gaps which exist in present standards and guidance documents.
Standard

USE OF MODELING AND TOOLS FOR AIRCRAFT SYSTEMS DEVELOPMENT – A STRATEGY FOR DEVELOPMENT ASSURANCE ASPECTS WITH EXAMPLES

2013-04-30
WIP
AIR6276
This AIR addresses the use of Software tools to supplement or automate human activities in the development of systems, but not the hardware or software items within those systems. If a systems development tool is also used in the scope of hardware or software item development, for that usage it would then become subject to the guidance presented in DO-254 and DO-178B/C, respectively.
Standard

Information Guide for Electric Motors which Drive Hydraulic Pumps

2016-04-25
WIP
AIR6855
This document provides an application guide for electric motors that drive aerospace hydraulic pumps. It provides details of the characteristics of electric motors powered by DC, Fixed Frequency AC, and Variable Frequency AC electrical systems. The applications include both military and commercial aircraft.
Standard

Using STPA During Development and Safety Assessment of Civil Aircraft

2018-02-13
WIP
AIR6913
This AIR will provide a basic understanding of STPA and how it can be applied to development and safety assessment of civil aircraft. It will explain, by way of an example, the information needed to begin STPA, the expected STPA outputs, and the phases of aircraft development and safety assessment that can be supported by STPA.
Standard

Human Considerations for Functional Hazard Assessments

2022-05-02
WIP
AIR7127
Clarify the role of the human considerations in Functional Hazard Assessments by identifying the sufficient input information regarding those considerations from the development process, how failure conditions may use that information, and what information the safety assessment process provides to other processes, particularly Human Factors, to assure those aspects of failure conditions are valid.
Standard

Seals and Wipers for Mechanical and Electromechanical Actuators

2021-04-29
WIP
AIR7379
The purpose of this AIR is to provide a comprehensive description document that displays various examples of low pressure seals and wipers utilized within mechanical and electromechanical actuators. The document is intended as an overview for those specifying or designing actuators in order to compare existing solutions as reference for implementation.
Standard

Environment Spectra and Corrosivity Monitoring Using Electrochemical and Electrical Resistance Sensors

2019-02-11
WIP
AIR6970
This Aerospace Informational Report (AIR) provides guidance on using environmental, electrochemical, and electrical resistance measurements to monitor environment spectra and corrosivity of service environments, focusing on parameters of interest, existing measurement platforms, deployment requirements, and data processing techniques. The sensors and monitoring systems provide discrete time-based records of 1) environmental parameters such as temperature, humidity, and contaminants; 2) measures of alloy corrosion in the sensor; and 3) protective coating performance in the sensor. These systems provide measurements of environmental parameters, sensor material corrosion rate, and sensor coating condition for use in assessing the risk of atmospheric corrosion of the structure.
Standard

Advanced methods for Wire Selection and Sizing for Aerospace applications

2019-05-30
WIP
AIR7497
This SAE Aerospace Information Report is intended to provide advanced methods for wire selecting and sizing in aerospace application as a continuation of AIR6540, Fundamentals in Wire Selection and Sizing for Aerospace Applications. Also, it will provide valuable information for the electrical design engineer to verify the proper wire selection and validate a set of system design requirements which includes meeting environmental and installation constraints.
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