Thread: New 2000 hour TBO

It looks like the new 2000 hour TBO has been approved by Rotax for certain engines. Some will be good to go as is, others will need what seems to be a simple retrofit since they already have the right case.

Looks like X-Mas came early. Enjoy!!!

Looks like most of us will only have to put in the new oil regulator cone. No one has it in stock yet, but should be anytime now. It replaces the old spring and ball bearing the regulates the oil pressure. This should only take 1-2 minutes.

That is great news for my little flight school and my wallet, which is really light right now!

Eric Swisher
Copper City Aviation Services

Do be careful to check the engine serial number. One part to replace is the oil pressure bolt & spring (cheap).
The other is crankcase halves for 5.464.559 and earlier. About $4600, plus an engine rebuild.
Save that for 1500hrs if you are unlucky. My s/n 06-12-15 CTSW has engine serial 5.647.6xx
so I feel lucky. Happy Holidays!

Just to avoid confusion, the crankcase replacement requirement for the 912ULS is from S/N 4,427.533 to S/N 5.646.559

I don't know how important the 2000 hr TBO really is for most of us. Rotax really just gave their blessing to go past 1500 hrs and not be "On condition". If it is of private use you can do "On Condition Inspections" past 1500 hrs anyway. If you use yours to train in commercially you may need to stick with the 1500 hr. TBO.
One of the CTSW's at my field came in a few months before mine and is 202 engines shy of making the cut without a new crankcase. By the time you buy a crankcase and pay for the work it would cost $8K. Might as well wait until the 1500 hr TBO and do the whole thing then and save a ton of money and the rest of us can go "On Condition". While that thought is in my head, if you are going to 2000 hrs or "On Condition" you need to be doing oil analysis. You could do these every 100 hrs which is every other oil change and during a 100 hr. inspection.

The 2,000 hours does not mean much to me - but the increase to 15 years does.

PRW