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The Wikipedia page on the Boeing 777 says that the 777-300ER can have either the GE90-110B1 or the GE90-115B, however it was my understanding that the 777-300ER does not have engine options and is only available with the GE90-115B.

Furthermore, this unofficial production list confirms that there are no 777-300ER with the -110B1.

With that said, here's my question: has the 777-300ER ever been offered with the -110B1, whether as a factory option or as a retrofit/modification?

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    $\begingroup$ I updated the Wikipedia page to show the correct engines and thrust ratings. $\endgroup$
    – Bianfable
    Commented Nov 22, 2019 at 8:18

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According to the EASA Type Certificate Data Sheet (TCDS) of the Boeing 777, only the GE90-115B engines are approved for the 777-300ER:

5. Engines:

Two (2) General Electrical GE90 Turbofan Engines Models installed: GE90-115B, EASA Type-Certificate No.: EASA.IM.E.002 Limitations: See Engine Data Sheet No. EASA.IM.E.002

The GE90-110B1 model is listed for the Boeing 777-200LR and 777-200F models. In the Wikipedia table, the engine entry is for all of these models together.

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    $\begingroup$ The GE90 spex table offers a hint as to why they're grouped together as well; same bigger fan and same compressor stages, for example. $\endgroup$
    – user14897
    Commented Nov 21, 2019 at 18:08
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    $\begingroup$ @ymb1 Yes, it's pretty much the same engine with a higher thrust rating. $\endgroup$
    – Bianfable
    Commented Nov 21, 2019 at 18:10

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