All the Gear's in the Box have an ultimate life.
The TBO on these Gearbox's already have ridiculous low hours as it stands, making this Aircraft a very expensive Aircraft to maintain on a good day.
What I would like to know is just what percentage of the Planet's or Epicyclic's make Ultimate Life, if any?
Does the Gearbox Log Book specify the Actual hours of all the discreet Components or only module's within.
Did the TBO goes down as a precautionary thing, or is around 2,000 all the Epicyclic can handle before it begins to wear?
I can't help thinking a dedicated Bearing for the Planet's instead using the Gear as an outer race would prevent these issue's.
It still freaks me out when I see the Epi Ring form part of the Gearbox Structure.