Imabell,
You are correct. But the same problem comes up with TBO times all over.
If the hours recorded are ok and legal but the component looks like it has done twice as much as logged then it must be down to what it is used for....
Put another way - a 5000 hour component returned for overhaul that should have gone back at 2000 hours. Paperwork says 2000 hours. Actually done 5000 hours. Folks at the factory look at this component and say "2000 hours and its trashed. No way we can extend the TBO on these things. May even have to shorten the TBO judging by the wear " (yes people, that is how the TBO is adjusted after initial testing)
That is why an IO-520 in an Agwagon has a 1200 hr TBO and the same engine in a C206 has an 1800 hr (I think) TBO. Bring it in trashed with only the "legal" hours logged then it must be down to what it is used for....
Makes me
. Endemic fudging of hours has prevented the manufacturers from extending the TBO on these things. Imagine how high the legal TBO would be now if hours were logged properly.
I'm with you Imabell - simple thinking for a simple mind has got us to this situation.