Abstract: The invention pertains to a method and apparatus for verifying the consistency of the values given by an angle of attack probe of an aircraft. The method and apparatus verifies the proper operation of the angle of attack probe by using the aircraft's vertical load factor measurement provided by an accelerometer to estimate the angle of attack and then comparing the estimated angle of attach with the measure angle of attack.

Abstract: This invention relates to a system for processing redundant signals, an associated method, as well as an aircraft comprising such a system, from a viewpoint of monitoring and passivation of erratic or oscillating failures affecting the sources of these redundant signals. The system comprises a module for calculation of a current useful signal from redundant signals; a monitoring/passivation module, able to detect an erroneous signal and to exclude the said erroneous signal from the calculation according to a criterion; and a means for toggling, as soon as an erroneous signal is detected, to a freeze mode freezing the output useful signal, and for returning, as soon as an erroneous signal no longer is detected, to a transmission mode where the current useful signal is transmitted as output useful signal.