05-19-2014, 01:57 PM
I sent Nivek performance reports for both the 370Bs and the 450Cs. According to the Tiara performance reports, the larger C series engines are slightly more fuel efficient at planning cruise speeds. This is likely do to loading. The 450Cs are under a light load when planning and the 370Bs are under more load and require more fuel burn to operate at those speeds. Nothing wrong with the Bs, just more efficient with the Cs.


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