Alltrikes

Rotax announces Service Bulletin SB-912-064 / SB-914-045 : Periodic checking of the crankshaft journal for 912 & 914 series engines.

Rotax has previously released SB-912-059/914-042 wherein a limited range of engines required an inspection looking for potential cracks developing in the PTO end crankshaft journal. Field experience has subsequently shown that a one time inspection is not sufficient, and therefore an ongoing periodic inspection will be necessary every 100 hours of operation and/or annually every twelve months, up to 1000 hours total engine time.

In addition, Rotax engine owners and operators should be aware the range of engine serial numbers affected has been expanded, therefore your engine serial number should be checked against those listed in the appropriate SB for your engine type (Certified or UL). Engines which have been overhauled or repaired using a new crankshaft should also have their crankshaft serial number checked against specific crankshafts listed as affected in the appropriate SB release.

Rotax has also designed a new tool that greatly simplifies this inspection requirement for engines affected. This tool is easy to use and speeds up the process of meeting compliance to the SB.

CLICK HERE to view the service bulletin.

For UL (Uncertified) engines, CLICK HERE to view the UL Service Bulletin.

===========

Also, I found this older Rotax Service bulletin that @Crayonbox posted a while ago to the Airborne group