on December 4th.(ASB-914-054) regarding the 914 F engine type which can be found on the flyrotax webpage for further details.
We know that currently the Stemme aircraft 12-019 and 12-020 are affected. As others might be affected which we don't know of please make sure you have fully read and understood the Alert Service Bulletin. If you have any further questions please contact our service department.
In any case find following the document: