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I thought the T800 was only on the B777 varients?
Correct. Trent 800s are a 777 engine only (and not 77L/77W). These days large engines are almost invariably designed and optimised for one airframe.
Oh, didn't know that. The optimisation is not surprising on reflection.
Still it could still be argued as a system issue, given the "end-to-end" aspects of this problem.
I'd be interested to know how the fix will be funded. If this was a car with an ABS brake problem then the manufacturer would be doing a "recall" with a free replacement of the defective item at their cost. Is it the same for an aircraft manufacturer? Would Boeing and Rolls have separate contracts with the airlines, or would it all go through Boeing? Some interesting commercial/liability interfaces here.....