Positive Transfer of Control During flight training, there must always be a clear understanding between the student and flight instructor of who has control of the aircraft. Prior to any dual training flight, a briefing ( 讲评 ) should be made that includes the procedure for the exchange of flight controls. The following three-step process for the exchange of flight controls is highly recommended. When a flight instructor wishes the student to take control of the aircraft, he/she should say to the student, “ You have that flight controls. ’ The student should acknowledge immediately by saying, “ I have the flight controls. ” The flight instructor confirms by again saying, “ You have the flight controls. ” Part of the procedure should be a visual check ( 目视检查 ) to ensure that the other person actually has the flight controls. When returning the controls to the flight instructor, the student should follow the same procedure the instructor used when giving control to the student. The student should stay on the controls until the instructor says, “ I have the flight controls. ” There should never be any doubt as to who is flying the airplane at any one time. Numerous accidents have occurred due to a lack of communication or misunderstanding as to who actually had control of the aircraft, particularly between students and flight instructors. Establishing the above procedure during initial training ( 初始训练 ) will ensure the formation of a very good habit pattern.