Rotax 503 TBO

[Jon Hewitt]

Hi all
Some advice please
I am looking at buying a windlass 503 - actually my old trike ;very good condition did 200 hours over 2 and a half years .trike was checked out ! Engine is in good condition etc .engine Has good compression and was signed out by Ap.
The engine is sitting on 680 hours.
Is there a mandatory Tbo .I don't want to buy it and then have a surprise bill to replace the engine.
How long can this engine go for until I have to replace it .
Jon

[RV12]

300 hours ?