Abstract: In this paper some problems existing in often used nose gear load spectra and the rea- son why fatigue test results are not in accordance with that of actual failure in practical service of nose gears are discussed by service load spectra measurements of main and accessory shimmy damper of the nose gear for H6 airplane,and through the introduction and analysis of fatigue test method and its results.Suggestion is given for improvement of future nose gear load spectra compilation and its fatigue test loading method determination.

Key words: loading tests, fatigue tests, nose wheels dampers