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Hi ROAN,

Tecnam have published a mandatory service bulletin to disable the Rotax soft start feature on the 912 whilst an investigation is completed into false activation of the soft start (retard ignition timing) during flight here:

https://reservedarea.tecnam.com/Utility/Download.aspx?file=d0106b02-db0f-41ea-bfbc-ec56a0f459c5

without knowing the specific details of the issue (e.g. does it only impact Tecnam due to a potential unique way they connect the ignition systems) or is it likely to be applicable to all Rotax engines fitted with soft start feature no matter who the airframe manufacturer is?

Keen to hear if anyone has more experience with this issue please.

 

Regards,

 

Byron.

 

 

10531_1_SB_097-UL-_Rotax_912S_Engine_Soft_Start_Deactivation.pdf (You do not have access to download this file.)
  • Re: Tecnam 912 service Bulletin to disable soft start

    by » one month ago


    Hello Byron

    Currently this is only a Tecnam issue.  Rotax has not informed any of the distributors of any issue.  I suspect it may have something to do with other issues in the wiring in that since 2010, the introduction of the soft start system, we have not found any problems related to it.  I have no idea how the Tecnam system can activate the soft start inflight, perhaps that is the question.  

    There is a Rotax factory flyin in Austria in a week, perhaps some news will come out at that time.  I will be there and ask for a comment, as I am sure others will as well.

    Cheers


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