Final answer:
In case of radio communication failure in controlled airspace, pilots should remain in their assigned airspace, set transponder to CODE 7600, and inform air traffic control.
Step-by-step explanation:
In the event of a two-way radio communication failure between the controlling air traffic control unit and a VFR aircraft operating in Class B, Class C, or Class D airspace, the pilot-in-command is required to:
- Remain in the assigned airspace: The pilot must continue to operate within the designated airspace until they are able to reestablish communication.
- Set transponder to CODE 7600: This code signals to air traffic control that the pilot is experiencing a communication failure.
- Inform an appropriate air traffic control facility as soon as possible: The pilot should notify the appropriate air traffic control facility about the communication failure and provide relevant details.