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Under which circumstances may an aircraft operate in Class F airspace (e.g. an advisory route)?

  • A

    The airspace may only be used by night and the aircraft must be equipped accordingly.

  • B

    The aircraft must be equipped with a radio capable of maintaining two way communication.

  • C

    The aircraft must have a SELCAL unit installed.

  • D

    The aircraft may only navigate with the use of an approved GPS.

AIP South Africa
ENR 1.4 ATS AIRSPACE CLASSIFICATION
1 Classification of airspace

  • Class F → Advisory service will be provided.

ENR 1.3 INSTRUMENT FLIGHT RULES

7 Mandatory radio communication in advisory airspace
7.1 The pilot-in-command of an aircraft to be operated in advisory airspace shall ensure that, before the aircraft approaches or enters such airspace

a) two-way radio communication with the responsible air traffic services unit is established on the designated radio frequency;

b) if such communication is not possible, two-way radio communication is established with any air traffic service unit which is capable of relaying messages to and from the responsible air traffic unit; or

c) if such communication is not possible, broadcasts are made on the designated radio frequency giving Information on the aircrafts Intention to enter the
airspace, and such pilot-in-command shall ensure that, while the aircraft is within the advisory airspace and until it departs there from, a continuous radio watch is maintained on the designated radio frequency (…)

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