Ferry Flight {Ans: A flight without passengers for the purpose of returning an aircraft to base; delivering an aircraft one location to another; moving an aircraft to and from a maintenance base}Line Check {Ans: An observation conducted by a qualified Check Flight Attendant during which a FA is required to demonstrate his/her proficiency in all areas of duties and responsibilities}Bank {Ans: To turn or dip the airplane, either to the left or right, in order to change the direction of the aircraft}Decompression {Ans: Occurs when there is a loss of cabin air pressure}A/C L {Ans: Aircraft Left - The left hand side of the aircraft - Facing the cockpit}Potable Water {Ans: Water that has been purified and certified by local authorities as safe for drinking}