Various example embodiments are directed to scale testing based on scenarios. A bore in the housing connects the quick braking chamber at a first end and the one side of the piston at a second end. At least one aircraft flight parameter is represented as a random variable with a particular statistical distribution, such as a normal, Laplacian, or logistic distribution; or with a more complex algorithm containing one or more random elements. One set of devices includes needles having protrusions secured to the distal regions of drug delivery tubes. The reset generation circuit allows a TAP controller to be scan testable yet at the same time the circuit provides a method to exit scan mode without requiring a power-up sequence or an extra pin. When the vehicle is moving forward and the forwardbackward switch lever is in forward motion position, or when the vehicle is moving backward and the forwardbackward switch lever is in backward motion position, the second speed threshold is set to a predetermined first value.