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A pilot is departing from Lille in F-GTPO approaching the holding point with three aircraft ahead. The pilot receives the following message: "F-PO, contact Lille Tower 118.550"? What course of action must the pilot take?
  • A
    Read back: “118.550, F-PO”, switch to 118.550 MHz, and wait for Lille Tower to initiate communications on this frequency.
  • B
    Read back: “Contacting 118.550, F-PO”, switch to 118.550 MHz, and wait for Lille Tower to initiate communications on this frequency.
  • C
    Read back: “118.550, F-PO”, switch to 118.550 MHz, and call Lille Tower to notify his/her presence on this frequency.
  • D
    Read back: “Calling 118.550, F-PO”, switch to 118.550 MHz, and call Lille Tower to notify his/her presence on this frequency.

Refer to figure.
ICAO Doc 9432 - Manual of Radiotelephony
2.8.3 Issue of clearance and read-back requirements

2.8.3.5 The following shall always be read back:

a) ATC route clearances;
b) clearances and instructions to enter, land on, take off from, hold short of, cross and backtrack on any runway; and

c) runway-in-use, altimeter settings, SSR codes, level instructions, heading and speed instructions and, whether issued by the controller or contained in ATIS broadcasts, transition levels.

2.8.2 Transfer of communications
2.8.2.1 An aircraft shall be advised by the appropriate aeronautical station to change from one radio frequency to another in accordance with agreed procedures. In the absence of such advice, the aircraft shall notify the aeronautical station before such a change takes place.

  • Correct readback: “118.550, F-PO”; the pilot should then switch to the new assigned frequency and announce his/her presence.

Note: The rules ask you to read back the frequency only.
"1. the aircraft station shall read back safety related parts of ATC clearances and instructions. The following items shall always be read back in full:
- Newly assigned radio communication channels (channels or frequencies)"

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