Authors: O. Mykhalov, V. Zhuravlev, R. Suhomlin In this work we propose method of aviation reduction drive diagnosis, which use Hilbert-Huang transform and wavelet analysis. Hilbert-Huang transformwavelet analysisvibrationair geardiagnosinghttps://science.lpnu.ua/sites/default/files/journal-paper/2017/may/2406/mikhalyovzhuravlevsuhomlinukr-kopiya.pdf