Originally Posted by
falcon20pilot
The ability to run over TBO is specific to the 90 series and how Beech wrote the manuals. There is no chapter 4 in the manual which would list the life limited parts, and per 91.403(e) there are no administrator approved documents that say you can't run over TBO. The only parts listed are the internal cycle limited parts, most of which are around 18,000 cycles.
It wouldn't be in the Beech manual since PWC made and certified the airframe. The FAA approved document is the TCDS for the PT6 which, in Note 14, referenced the TBO and Service Life SBs (SB1803 iirc for the -21/28 TBO). This wraps those SBs into the airworthiness requirement for that engine. FWIW that SB also addresses the extension policies relating to transfer. The MORE site has additional info on this in the FAQ section. As for components, the Gen is 2500 and the FCU I think is 4100 hrs. Some older disks have 8000 cycle lifves, too. You just have to check what parts are installed in the specific engine.