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Aviation Glossary :: Resolution Advisory  Aviation Glossary :: Resolution Advisory FAA Written Test Preparation
Aviation Glossary Welcome to the Dauntless Aviation Glossary!

At Dauntless, our editorial staff maintains the web's largest unified glossary of aviation terms. This glossary is built from a combination of official, quasi-official, and proprietary sources (including original material that we develop oursselves). Uniquely, we often provide multiple definitions of a given term so that you can find that which best applies to you. In order to maximize your learning efficiency, this glossary (and similar ones for our international users) is incresingly fully integrated into our aviation learning apps, including our FAA written test prep and FAA practical test prep software and apps. If you like this glossary, you'll love them with their polished learning environments and world's best and clearest content (please do give them a try.).

Resolution Advisory
Resolution Advisory
A warning issued by the Traffic Collision Avoidance System (TCAS) indicating an immediate threat of collision with another aircraft. This warning takes the form of a command to perform a vertical avoidance maneuver (e.g., “Climb! Climb!”) These commands are products of TCAS II equipment. These commands take precedence over ATC instructions, but must be reported to ATC immediately upon receipt and execution.
source: FAA Advanced Avionics Handbook (FAA-H-8083-6)
A display indication given to the pilot by the traffic alert and collision avoidance systems (TCAS II) recommending a maneuver to increase vertical separation relative to an intruding aircraft. Positive, negative, and vertical speed limit (VSL) advisories constitute the resolution advisories. A resolution advisory is also classified as corrective or preventive
source: FAA Pilot/Controller Glossary
RA: a message delivered by the TCAS instructing the crew to climb or descend. An RA requires the crew to take immediate action. If there is a conflict between an ATC instruction and a TCAS Resolution Advisory, the crew must obey the Resolution Advisory. If the TCAS instructs the crew of one aircraft to descend, and ATC also instructs the non-TCAS equipped aircraft to descend, the TCAS will give the crew a contrary instruction after a few seconds in order to avoid collision
source: ICAO English Pro Aviation Glossary

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Disclaimer: While this glossary in most cases is likely to be highly accurate and useful, sometimes, for any number of editorial, transcription, technical, and other reasons, it might not be. Additionally, as somtimes you may have found yourself brought to this page through an automated term matching system, you may find definitions here that do not match the cotext or application in which you saw the original term. Please use your good judgement when using this resource.


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