When is an aircraft considered to be dispatched?
Before an aircraft is dispatched certain pieces of equipment must be operational on an aircraft. If some equipment is found to be inoperative, a determination can be made of whether or not to dispatch based on the information found in the MEL or CDL.
After an aircraft has been dispatched, disposition of inoperative equipment would follow the guidance inside the AFM.
Simply put, at what point does the dispatcher / crew switch over from relying on the MEL / CDL to the AFM for guidance? The pilot in command has the final authority to takeoff so I am not asking about equipment that are significant to the operation of the airplane.
I am interested in both FAA Part 121 airline operations, Part 135 charter operations and Part 91 flights.