Max Ng,I don't think that a failure between the engine and the MGB could necessarily as the "more likely" failure. Failure of an N2 overspeed sensor (Phonic wheel type I seem to remember)is more likely.. .. .Deadcentre. .. .Point taken on the coning angle but what about the single engine case where you are still allowed to droop the Nr down to 96%? Surely if coning angle was a problem with increasing Gross weight, you wouldn't be allowed to droop any more in the single engine continued take off case.. .. .Also, the TOGW of the A+ and the ++ are the same and the A+ doesn't require 107%NR all the time.. .. .LE