They have a mitigation in the form of an automatic engine restart system. I suspect part of their risk analysis is going to call out reliability of that functio

They have a mitigation in the form of an automatic engine restart system. I suspect part of their risk analysis is going to call out reliability of that function. If the RR engine is failing prematurely then there's also an argument the be made for switching to the GE engine because the maintenance costs are going to be passed on to the passengers in the form of higher prices.