Airbus says it is prepared to supply Rolls-Royce Trent 900 engines from A380s on its production line to operators that require replacements following mandated inspections.
Toulouse says replacement engines could be sourced from the Rolls-Royce production line, airlines' spares or Airbus assembly lines, explaining: "Airbus is supporting Rolls-Royce and the customers when requested to do so, by demounting engines from customers' production aircraft in Toulouse and Hamburg."
which would tie into what was mentioned earlier , about compensation ; that being that they can supply engines (unused) now so long as RR can make new ones fast enough so the deliveries are not delayed.