Methods and apparatus are provided for more reliably transferring operational control for various aircraft flight control surfaces from a first sub-system to a second sub-system. Each metric may be selected to permit a user to view detailed information concerning the metric. In an alternative arrangement, the label may be provided with a clear polyester forming the first layer and the second layer may include a clear polypropylene with a plurality of overlaid print layers applied thereto for displaying information to both sides for the label. Providing contacts of the emitter electrode with the n-type source layer at the side walls of the trenches permits a miniaturization of the device and a reduction of the ON-resistance as well. In the optical scanning device, a beam incident on a scanning area of an object’s surface to be scanned and a beam incident on a synchronization signal detector are emitted by a light source but deflected from different deflecting surfaces of a beam deflector.