> read back by the crew means confirmed Read back does not mean confirmed, it's basically a double check. What pilots do when they get an instruction they'll r

> read back by the crew means confirmed Read back does not mean confirmed, it's basically a double check. What pilots do when they get an instruction they'll respond with the same instruction (but abbreviated). Example: ATC: Descend and maintain FL300 Pilot: Cleared for FL 300, XZ 123 Whereby XZ 123 indicates the flight. By reading back the instructions ATC should notice if the pilot heard everything correctly. That's entirely different than "confirmed". With confirmed there's no double check. Further, unless there's an emergency AFAIK the pilot must follow ATC so no need to "confirm".