though this is offset by the reduced payload it has to offer against the 225 on normal days,
You're comparing apples and bananas
The right question is: what's the difference in payload between a S92 and a Norwegian 225?
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(don't wanna start an
other argument 92vs225 here, just interested in the figures. I know it's approx 500kg in favour of a "non-RIPS" 225)