I've been looking at the most recent heavy maintenance manual as well as the line maintenance manual and I can't seem to find a definitive answer.  Are there life limited parts in the 912 ULS gearbox that need to be replaced when you do the gearbox inspection?  If so, what are those parts? 

  • Re: 912 ULS Gearbox Life Limited Parts

    by » 7 months ago

    All components within the 912UL, 912ULS, 914UL, 912iS, etc gearboxes are "on condition" and are replaced only when necessary. If the propeller shaft is removed, then the prop shaft bearing and seal require replacement. 

    The torsion shaft in the 915iS gearbox is replaced after a certain amount of hours of operation (currently it is replaced every 600 hours)


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