FIELD: aviation.
SUBSTANCE: in order to control the wear, the abnormality index, generated on the basis of measurements of onboard unit physical parameters, is compared with the decision threshold and the alarm signal is transmitted when it is exceeded. A plurality of abnormality indices for a plurality of aircraft flights are calculated to obtain the probability distribution density of abnormality index, the probability distribution density is smoothed over to obtain a smoothed continuous distribution density function, based on which, the smoothed continuous distribution density function is calculated, the preceding member of the continuous smooth function for the 1-Pa value is read, wherein it corresponds to the decision threshold.
EFFECT: reliability and accuracy of determining the decision threshold for controlling the wear of onboard unit in an aircraft.
5 cl, 7 dwg
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