Hey guys, Looks like Rotax came out with a propeller shaft service bulletin yesterday and I went to check my engine serial number against it and I'm confused. The SB lists from 10000401 up to about 10001089, which would lead me to believe they are sequential. But my engine serial number is 4417228, so I'm a bit confused because there's no way Rotax has made 4.4 million 912iS engines lol. Can anyone shed some light on this? Is my engine serial number wrong somehow? My 912iS Sport engine was built Feb 2013, according to the logbook.


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