If a pilot has reported leaving an assigned altitude, what must they obtain to return to that altitude?

• A. ATC permission to return
• B. No permission needed
• C. Permission from ATC
• D. Weather clearance

Answer: (C)

ATC controls the vertical space to keep airplanes safely separated, so once you depart from an assigned altitude you can’t automatically rejoin it. You must obtain ATC clearance to return to the previously assigned altitude. This explicit permission ensures there won’t be conflicts with other traffic that might be at or crossing that level. Weather clearance isn’t the mechanism for returning to an altitude, and saying no permission is needed isn’t correct because rejoining an assigned altitude requires ATC authorization. When you’re ready to go back, you’d contact ATC and receive the clearance to resume maintaining that altitude.