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DO-281B, Minimum Operational Performance Standards (MOPS) for Aircraft VDL Mode 2 Physical Link and Network Layer
Issued 03-21-2012 | Prepared by SC-214
This document presents MOPS and test procedures for Aircraft Very High Frequency (VHF) Digital Link (VDL) Mode 2 physical link and network layer protocol components of an avionics transmitter/receiver (transceiver). These transceivers are intended for air-ground (A/G) data communications. Equipment certified to standards in this MOPS will be compatible with the relevant Minimum Aviation System Performance Standards (MASPS) in RTCA DO-224C, Signal-in-Space Minimum Aviation System Performance Standards (MASPS) for Advanced VHF Digital Data Communications Including Compatibility with Digital Voice Techniques, and with the International Civil Aviation Organization (ICAO) VDL Mode 2 Technical Manual. Compliance with this MOPS is one means of assuring that the VDL Mode 2 equipment will function satisfactorily under all conditions normally encountered in the air traffic control air-to-ground (A-G) operations and that data formats will be compatible with the Aeronautical Telecommunication Network (ATN).
The key improvements provided in this revision are the addition of test procedures for multi-frequency related operations that are required in DO-224C. Some of these test procedure additions include frequency support list tests, ground requested aircraft initiated handoff tests, aircraft initiated handoff tests, and ground initiated handoff tests.
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DO-305A, Future Air Navigation System 1/A - Aeronautical Telecommunication Network Interoperability Standard (FANS 1/A - ATN B1 Interop Standard)
This document provides interoperability requirements to enable FANS 1/A aircraft and ATN aircraft to co-exist in the same operational environment. The standard was developed to enable air traffic service providers (ATSPs) to interoperate with datalink equipped aircraft, regardless of which technology is installed on the aircraft. The standard is intended for the convergence of oceanic and continental datalink applications. It provides the interoperability requirements for an aeronautical telecommunication network baseline 1 (ATN B1) ground system that provides air traffic data link services to future air navigation system 1/A (FANS 1/A) aircraft in continental airspace.
This revision includes the new requirements for Seamless ATS communications transition between different datalink technologies.
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Supplement - DO-312, Safety, Performance and Interoperability Requirements Document for the In-Trail Procedure in Oceanic Airspace (ATSA-ITP) Application
Issued 03-21-2012 | Prepared by SC-186
After DO-312 was issued on June 19, 2008, work on the ITP application continued within ICAO. This Supplement contains a summary of the three parameter changes from the additional development of the ATSA-ITP undertaken by ICAO. These changes have been adopted by FAA and are used for the incorporation of ITP into the ASA System MOPS (DO-317A).
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DO-334, Minimum Operational Performance Standards (MOPS) for Strapdown Attitude and Heading Reference Systems (AHRS)
Issued 03-21-2012 | Prepared by SC-219
This document contains MOPS for Strapdown Attitude and Heading Reference Systems (AHRS). It is intended for equipment that does not use gimbaled sensors and for equipment that outputs attitude (pitch and roll). It also addresses functions of heading, turn, slip and the display of this information. This document does not specify the format of data outputs but does specify equipment characteristics that should be useful to designers, manufacturers, installers and users of the equipment.
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DO-335, Guidance for Installation of Automatic Flight Guidance and Control Systems (AFGCS) for Part 23 Airplanes
Issued 03-21-2012 | Prepared by SC-220
This document provides recommended installation guidance for automatic flight guidance and control systems (AFGCS) for small fixed-wing airplanes (FAR Part 23). These systems allow the aircraft to be flown smoothly and precisely according to either the flight plan or to direction from air traffic controllers, while the pilots direct the rest of their attention to other cockpit duties. A full-featured AFGCS improves safety by protecting the aircraft from incursions outside the flight envelope and maintaining predictable flight path. It may also fly approach to landing and complex departure and arrival procedures more reliably and accurately than a hand-flown aircraft. This document addresses technology and feature improvements affecting the safety and performance of the AFGCS, including the recently-published MOPS DO-325.
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DO-336 - Guidance for Certification of Installed Automatic Flight Guidance and Control Systems (AFGCS) for Part 27/29 Rotorcraft
Issued 03-21-2012 | Prepared by SC-220
This document provides recommended installation guidance for automatic flight guidance and control systems (AFGCS) for rotary wing (FAR Part 27/29). These systems allow the aircraft to be flown smoothly and precisely according to either the flight plan or to direction from air traffic controllers, while the pilots direct the rest of their attention to other cockpit duties. A full-featured AFGCS improves safety by protecting the aircraft from incursions outside the flight envelope and maintaining predictable flight path. It may also fly approach to landing and complex departure and arrival procedures more reliably and accurately than a hand-flown aircraft. This document addresses technology and feature improvements affecting the safety and performance of the AFGCS, including the recently-published Minimum Operational and Performance Standards DO-325.
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DO-337 - Recommendations for Future Collision Avoidance Systems
Issued 03-21-2012 | Prepared by SC-147
This document examines operational and technical performance issues observed in the current TCAS II as well as issues anticipated to emerge in the future as NextGen changes affect the airspace. It explores potential changes to address these issues and addresses their maturity. The document comments on additional research and development that would be required, either to better characterize the issue, to develop solutions or both. The document also presents tables to help the reader map solutions to issues and recommendations are presented for the solutions deemed most promising and deserving of high research priority.
Issues and solutions are presented in two major categories:
- Issues affecting the current TCAS II and changes that could be made to that system without substantial redesign. These are termed "near-term" changes, but their development, certification and implementation could take as long as six years.
- Issues anticipated in the future, and changes that would require either substantial redesign or that might use entirely new sources of surveillance data. These changes are termed "far-term" and would take more than 10 years. Some far- term solutions may be required to address near-term issues.
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