SSR stands for which radar system in aviation?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

SSR stands for which radar system in aviation?

Explanation:
Secondary Surveillance Radar is the system that uses aircraft transponders to provide identification and altitude information in addition to the radar return. Ground radar interrogates the transponder, and the aircraft replies with encoded data, such as a squawk code and altitude (via Mode A/C, and more data with Mode S). This cooperative exchange lets air traffic controllers see who is on the screen and how high they are, improving separation and traffic management far beyond what raw radar echoes alone can provide. The other options don’t describe a recognized aviation radar system, so they don’t fit.

Secondary Surveillance Radar is the system that uses aircraft transponders to provide identification and altitude information in addition to the radar return. Ground radar interrogates the transponder, and the aircraft replies with encoded data, such as a squawk code and altitude (via Mode A/C, and more data with Mode S). This cooperative exchange lets air traffic controllers see who is on the screen and how high they are, improving separation and traffic management far beyond what raw radar echoes alone can provide. The other options don’t describe a recognized aviation radar system, so they don’t fit.

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