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Standard

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

Method to measure the filtration performance of SCR/Urea filters

2021-01-27
WIP
J3245
The purpose of this SCR filter test method is to provide standardized methods for evaluation the filter characteristics of the SCR filter by bench test methods. This, combined with data obtained from application test, maybe used to establish standards of performance for filters when tested by these standard methods. Many variation in requirements of filtration to protect the SCR supply equipment on vehicles and variations in operational conditions make it difficult to specify meaningful “in-service” performance standards by which a filter may be judged. By the use of these standard test methods, test conditions are always the same, and comparison of the laboratory performance of filters may be made with a high degree of confidence. Once the requirement of a particular application are known, performance standards for suitable filters may be established by these test methods, and adequacy of performance of filters for the job may be determined.
Standard

Contamination definition for Fuel Tank Inerting Systems

2016-02-01
WIP
AIR6374
The scope of this document is to provide a guidance of the common contamination types and their concentrations in order to size FTIS components and characterize its performance on generic commercial aircraft.
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

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

Adapter, Closed-Circuit Fuel Servicing

2021-03-11
WIP
AS6848
Aircraft-mounted Closed Circuit Refueling receiver adapter – Definition of standard interface dimensions for adapter which interfaces with MIL-PRF-52747F Nozzle.
Standard

Fuel Tank Inerting System Ground and Flight Test Methodology Recommended Practice

2015-05-19
WIP
ARP6063
This SAE Aerospace Recommended Practice (ARP) provides guidance for the verification and certification of a “commercial” fixed wing aircraft fuel tank inerting system (FTIS) and will provide technical references and data regarding ground and flight testing of an FTIS. The intent of this ARP is to address issues associated with the verification requirements based on current regulatory guidance per AC25.981-2C
Standard

Skew and Disconnect Detection in High Lift Systems

2021-09-09
WIP
ARP5775
The document provides a definition of skew and disconnect occuring in high lift systems in flight controls including their hazard assessment, describes generic solutions and provides a for specifying requirements.
Standard

Design and Test Recommendations for Dielectric Strength and Insulation Resistance for Line Replaceable Units

2021-04-26
WIP
ARP5769
Scope: This Aerospace Recommended Practice (ARP) provides guidelines for specifying dielectric withstanding strength and insulation resistance design and test requirements for aircraft line replaceable units (LRU's) used within a flight control and/or a utility system. 1.1 Purpose The testing is intended to verify that an LRU can operate safely at its rated voltage and withstand momentary over potentials due to switching, troubleshooting testing, surges, etc.. The testing is also intended to verify adequate design margin of the insulation system and detect workmanship problems.
Standard

Display Latency Evaluation Procedures

2012-12-03
WIP
ARP6238
This Aerospace Recommended Practice will identify the problem with latency in the pilot's instrument control of an aircraft. Recommended evaluation techniques to characterize control problems will be documented.
Standard

Procedure for the Calculation of non-volatile Particulate Matter Sampling and Measurement System Penetration Functions and System Loss Correction Factors

2022-06-24
CURRENT
AIR6504
This SAE Aerospace Information Report (AIR) describes a method for assessing size dependent particle losses in a sampling and measurement system of specified geometry utilizing the non-volatile PM (nvPM) mass and number concentrations measured at the end of the sampling system.1 The penetration functions of the sampling and measurement system may be determined either by measurement or by analytic computational methods. Loss mechanisms including thermophoretic (which has a very weak size dependence) and size dependent losses are considered in this method2 along with the uncertainties due to both measurement error and the assumptions of the method. The results of this system loss assessment allow development of estimated correction factors for nvPM mass and number concentrations to account for the system losses facilitating estimation of the nvPM mass and number at the engine exhaust nozzle exit plane.
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