Method for signal selection and signal selection apparatus

A method for signal selection for a flight system (23) having an aircraft (1), and having a signal selection apparatus (2, 39, 45, 47, 56), the method comprising:

• the signal selection apparatus (2, 39, 45, 47, 56) receiving at least a first control signal (3, 5, 7, 9, 35, 37, 41, 43) and a second control signal (3, 5, 7, 9, 35, 37, 41, 43), using an analysis logic circuit (16) to ascertain a piece of first reliability information (17, 18, 19, 20) for the first control signal (3, 5, 7, 9, 35, 37, 41, 43) and a piece of second reliability information (17, 18, 19, 20) for the second control signal (3, 5, 7, 9, 35, 37, 41, 43),
• at least one of the first or the second control signal (3, 5, 7, 9, 35, 37, 41, 43) being dependent on a remote control input (9) from at least one of a pilot or an autopilot outside the aircraft and, in a method step A, ascertaining a system state of the aircraft (1) based on at least one of a piece of state information (11) or a piece of mission information (11) of the aircraft (1);
• in a method step B, using an automated, decision logic circuit (21) to take the first and the second reliability information (17, 18, 19, 20) and the system state and a control hierarchy (22) as a basis for prioritizing the first or the second control signal (3, 5, 7, 9, 35, 37, 41, 43);
• and, in a method step C, outputting the prioritized control signal (13, 40, 46, 48).