Communications and Light Gun Signals 8
Transponder (Mode(s) A, C, and S) (PA.VI.B.K4)
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1. When making routine transponder code changes, pilots should avoid inadvertent selection of which code?
Answer (A) is correct. (AIM Para 4-1-20) Some special codes set aside for emergencies should be avoided during routine VFR flights. They are 7500 for hijacking, 7600 for lost radio communications, and 7700 for a general emergency. Additionally, you should know that code 7777 is reserved for military interceptors.
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2. When should ADS-B equipment be operated on the ground while taxiing?
Answer (C) is correct. (AIM Para 4-1-20) ADS-B uses highly accurate GPS signals. Because of this, ADS-B often will work where radar will not, even in mountainous terrain. It can also function at low altitudes and on the ground, meaning it can be used to monitor traffic on taxiways and runways.
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3. Onboard ADS-B Out equipment is useful to pilots and ATC controllers
Answer (C) is correct. (AIM Para 4-1-20) ADS-B Out accuracy reduces the risk of runway incursions because flight deck and controller displays show aircraft and equipped ground vehicle locations on airport surfaces, even at night or during heavy rainfall.
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4. Any airspace that requires the use of a transponder also requires aircraft to be
Answer (A) is correct. (14 CFR 91.225) The required equipment is a Version 2 ADS-B Out system, either a 1090 ES or UAT (Universal Access Transceiver) ADS-B system.
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5. ADS-B equipment offers many benefits to pilots; however, the range of coverage for air traffic controllers is
Answer (C) is correct. (AIM Para 4-5-7) ADS-B allows air traffic controllers (and ADS-B-equipped aircraft) to see traffic with more precision using highly accurate GPS signals. ADS-B works where radar often will not, even in remote areas, e.g., in mountainous terrain.
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6. Can aircraft without ADS-B Out equipment overfly Class C airspace?
Answer (A) is correct. (14 CFR 91.225) ADS-B Out equipment is required to operate above the ceiling and within the lateral boundaries of a Class B or C airspace area designated for an airport upward to 10,000 ft. MSL.
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7. ADS-B equipment is not required for aircraft in flight above 10,000 ft. MSL
Answer (B) is correct. (14 CFR 91.225) Because ADS-B uses highly accurate GPS signals, it often will work where radar will not, even in mountainous terrain. It can also function at low altitudes and on the ground, meaning it can be used to monitor traffic on taxiways and runways.
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