Superlame
Regarding QF not owning these engines - I have seen this comment a few times before on PPrune. I am not disputing this, as I have no knowledge of this particular situation.
However, most Power By the Hour ("PBH") contracts relate to engines which are owned by the airline concerned.
Do we know for sure that RR owns the engines ?
QF and JQ operate many aircraft that they do not own, but lease. This does not relieve them of any responsibility, as the AOC holder, for airworthiness compliance.
Qantas must "make their own decisions". Period. If they no longer have the professional competence to do so, then this should be investigated by the relevant authorities.
They may like to imply that they are no longer "responsible", as they have a PBH contract, but I do not think that this is correct.