Final answer:
When communication is lost while leaving a clearance limit that is not a fix from which an approach begins in air traffic control, the pilot should follow the lost communication procedures specified by the controlling agency.
Step-by-step explanation:
When communication is lost while leaving a clearance limit that is not a fix from which an approach begins in air traffic control, the pilot should follow the lost communication procedures specified by the controlling agency. These procedures usually involve continuing on the last assigned route, maintaining the last assigned altitude, and adhering to the last assigned speed. The pilot should also comply with any other instructions or restrictions previously issued by ATC.