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Which of the following information does NOT have to be read back to ATC?

  • A

    The temperature / dew point of the aerodrome

  • B

    Transponder operating instructions

  • C

    Type of flight information service offered

  • D

    Runway in use

Read-back occurs when ATC transmits certain information and the pilot repeats that information back to ATC. Read-back ensures that important information has been received properly.

The following items must be read back:

  • ATC route clearances
  • Runway clearances and instructions to: enter, land on, take off from, hold short of, cross, taxi and backtrack
  • Runway in use
  • Altimeter settings
  • SSR (transponder) codes and instructions
  • Newly assigned communication channels
  • Level instructions
  • Heading and speed instructions
  • Transition levels (even if obtained from ATIS)
  • Type of flight information service offered
  • Conditional clearances
  • Other clearances or instructions

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