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This document describes the technical requirements, architectural options, and recommended interface standards to support an Autonomous Distress Tracking (ADT) System intended to meet global regulatory requirements for locating aircraft in distress situations and after an accident. This document is prepared in response to International Civil Aviation Organization (ICAO) and individual Civil Aviation Authorities (CAAs) initiatives.

This document is intended to provide design guidance for the development and installation of an Enhanced Airborne Flight Recorder (EAFR). The EAFR standard addresses combinations of any or all of the following in a single Line Replaceable Unit (LRU), a Digital Flight Data Recorder (DFDR) function, a Cockpit Voice Recorder (CVR) function, a data link recording function, and an image recording function. This document does not address the overall flight data recorder system requirements but considers interface and system standards. This document does not replace ARINC Characteristic 747 which defines DFDRs. This document addresses the details of the voice recording function but does not describe the audio distribution system. It does not replace ARINC Characteristic 757 which defines CVRs. The EAFR may be used in a single or dual-redundant installation as permitted by regulation. Both configurations are addressed in this Characteristic.

This Characteristic provides the definitions for the physical form and fit dimensions, the electrical interfaces, and the functions of an independent power supply for cockpit voice recorders or crash survivable recorders that combine voice with other recording functions. The RIPS is used to provide backup power that is independent of the aircraft generated power buses. Supplement 2 introduces a description of charge rates for alternate power sources and revises the electrical interface to accommodate monitoring of the RIPS status.

This document provides design guidance for the development and installation of Flight Data Recorders (FDR) which may utilize solid state memory and which may employ some means of data compression. The Flight Data Recorder will be utilized with a Flight Data Acquisition Unit (FDAU) (ARINC Characteristic 573) or a Digital Flight Data Acquisition Unit (DFDAU) (ARINC Characteristic 717) to accommodate mandatory flight data recording and other flight data acquisition needs. The document provides guidance and information to ensure customer controlled interchangeability of equipment in a standard aircraft installation and in data retrieval. The system capability was expanded to accommodate a data bus speed of 1024 words per second.

This document defines the Air Traffic Control Transponder (ATCRBS/Mode S) with that supports emerging Automatic Dependent Surveillance - Broadcast (ADS-B) requirements. Supplement 4 adds ADS-B Out capabilities and enables the Mode S Transponder to comply with Mode S Transponder MOPS (RTCA DO-181E and EUROCAE ED-73E) as entered into ICAO Annex 10 Volume IV and ICAO Doc. 9871.

Mark 4 Air Traffic Control Transponder (ATCRBS/MODE S) describes an Air Traffic Control Radar Beacon System/Mode Select (ATCRBS/Mode S) airborne transponder with Extended Interface Functions (EIF). The ATC surveillance system is made up of airborne transponders and ground interrogator-receivers, processing equipment, and antenna systems. Mode S is a cooperative surveillance system for air traffic control with ancillary communications capabilities. ARINC 718A supports elementary surveillance. Provisional enhanced surveillance functionality is also defined as a customer option. The Mark 4 transponder, like its predecessor, will support TCAS functions.

This document defines the characteristics necessary to standardize the airborne recorder download file format in order to facilitate data import, transcription, and exchange. A standardized data format will reduce the variety of readout equipment required for airborne recorder data transcription. This document defines the detailed architecture of the Recorder Standard Output (RSO) file. The architecture is a tagged file structure within which many different files and their formats can be supported. The structure is necessary to support newer recording requirements for flight data, data link, audio, and image recording. This structure is intended for use with all civil recorders and should support use with military recorders.

A generic data transfer interface is defined for use between avionics computing equipment that exchanges binary message-oriented data. This interface was developed so that various manufacturers can partition Air Traffic Services (ATS) applications and protocols in different manners between various equipment.

This specification is an international standard defining the content and format of electronic files which document Flight Data Recording systems. The FRED specification is an expansion of the Flight Recorder Configuration Standard (FRCS) and is intended to provide guidelines for software systems designers and developers of ground support equipment for flight data recorders. The FRED specification has been developed to facilitate the exchange of Flight Data Recorder (FDR) documentation between aircraft manufacturers, operators, and government agencies. This specification addresses the ARINC Specification 664: Part 7, Avionics Full Duplex Switched Ethernet in numerous sections.

ARINC Specification 628, Cabin Equipment Interfaces (CEI) Part 6 Fiber Optic Cable Assembly General Specification, defines the minimum acceptable provisions for connectorized fiber optic cable assemblies used in permanently installed airframe wire bundles that are part of ARINC 628 supported systems. The intent is for the cable assembly supplier to use this specification as a guideline to provide the prospective IFE contractor with cable assemblies that have adequate quality and performance for the intended application. These assemblies are suitable for cabin systems applications only. Applicable guidelines not found in this specification may be found in Section 9 of ARINC Specification 628 Part 4A.

This document provides guidance for the development and installation of a Cockpit Voice Recorders (CVR) with solid-state memory. Supplement 6 provides the following: " The optional interfaces to data link services and On-Board Maintenance System (OMS) were revised to clarify that if the optional interface is implemented, then it shall be implemented in a specific way. " The power input section was revised to clarity the need for the CVR to be designed to accept 115 Vac power and 28 Vdc power from the aircraft. " The time correlation requirement was revised to specify that the CVR should receive its time signal from the same source as the Flight Data Recorder (FDR). " The OMS interface was updated to describe the correct ARINC 429 Sign Status Matrix (SSM) encoding for new CVR designs.

This standard sets forth the characteristics of a terrain awareness and warning system intended for installation in aircraft with digital signal interfaces. Describes the desired operational capability of the equipment, the standards necessary to ensure interchangeability, form factor, and pin assignments.

This standard provides design guidance for development and installation of a QAR, whose basic functions are to store digital data supplied at the output of an ARINC 573 FDAU or other similar acquisition unit and provide an easy access to this stored data for systematic ground processing for performance monitoring, maintenance monitoring or other purposes.

This standard sets forth the characteristics of a Ground Proximity Warning System (GPWS) designed for installation in commercial aircraft. The GPWS provides audible and visible warnings or alerts when an aircraft approaches terrain or deviates below the ILS glide slope beyond the limits set into the system.

This standard provides basic requirements for audible warning generators, whose function is to provide 25 different channels with sound and/or voice warnings, activated by discrete input signals and generated as a function of an unsafe condition of important systems of the aircraft. The outputs are available for audible display to the cockpit crew.

This standard includes specific requirements necessary to support flight data recording and other flight data acquisition needs. Design details necessary to ensure interchangeability of equipment in a standard aircraft installation is included.

Terrain Awareness and Warning System (TAWS)ý Analog addresses the need for standard TAWS installations in older aircraft that have analog equipment interfaces. The analog unit is intended as a replacement for ARINC Characteristic 594: Ground Proximity Warning System (GPWS) equipment. The document is intended to compliment ARINC Characteristic 762: Terrain Awareness and Warning System (TAWS) for later model aircraft having digital equipment interfaces.

This document describes Airborne Collision Avoidance System X (ACAS X) functionality and provides the necessary interface definitions and protocols to accommodate the requirements of RTCA DO-385: Minimum Operational Performance Standards for Airborne Collision Avoidance System X (ACAS X) ACAS Xa and ACAS Xo) (latest version applies) and the requirements of RTCA DO-386: Minimum Operational Performance Standards for Airborne Collision Avoidance System X (ACAS X) ACAS Xu (latest version applies). Additionally, this document describes interfaces and protocols necessary to accommodate Cockpit Display of Traffic Information (CDTI) based on the reception of Automatic Dependent Surveillance-Broadcast (ADS-B) data and Traffic Information Services–Broadcast (TIS-B) data. The equipment becomes ACAS X with ADS-B IN applications added, as defined by RTCA DO-317C: Minimum Operational Performance Standards for (MOPS) for Aircraft Surveillance Applications (ASA) Systems (latest version applies).

This document defines a Traffic Surveillance capability for NextGen and SESAR airspace environments. Supplement 2 adds hybrid surveillance functionality. It satisfies recent updates to FAA Airworthiness Circular AC 20-151B - Airworthiness Approval of Traffic Alert and Collision Avoidance Systems (TCAS II), and Technical Standard Order TSO-119d requiring the annunciation of a hybrid surveillance failure. Supplement 2 also adds strobe program pinning, updates TCAS inputs status, improves aircraft troubleshooting, and supports recent central maintenance computer function block point updates.

Mark 4 Air Traffic Control Transponder (ATCRBS/MODE S) describes an Air Traffic Control Radar Beacon System/Mode Select (ATCRBS/Mode S) airborne transponder with Extended Interface Functions (EIF). The ATC surveillance system is made up of airborne transponders and ground interrogator-receivers, processing equipment, and antenna systems. Mode S is a cooperative surveillance system for air traffic control with ancillary communications capabilities. ARINC 718A supports elementary surveillance. Provisional enhanced surveillance functionality is also defined as a customer option. The Mark 4 transponder, like its predecessor, will support Collision Avoidance System which includes TCAS and ACAS X functions.