| Number | Date | Description | ||
| 2020 | ||||
| Service bulletin SB_SD4-02-2020 | 2020/12/15 | Exchange of floats (pair) on ROTAX® Engine Type 912 ULS series equipped with floats P/N: 861185 or P/N: 861188 | ||
| Service bulletin SB_SD4-01-2019 | 2020/01/09 |
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| 2019 | ||||
| Service bulletin SB_SD4-01-2019 | 2019/08/09 | Replacement of circlip Rotax part no. 945785 installed in both carburetors for ROTAX Engine Type 912 ULS series | ||
| 2018 | ||||
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Service bulletin SB SD4-06-2017-R2 |
2018/02/12 |
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| 2017 | ||||
|
Service bulletin SB SD4-01-2017-R1 |
2017/12/12 |
*Service bulletins for ROTAX 912S2 serie engines can be found HERE
*Service bulletins for DUC Hélices propellers can be found HERE