The AD makes you wonder who would be at fault for this: QFA, or Rolls-Royce?
If the AD is valid, that would mean that the FAA (and every other aviation governing body) would have received the same directive. Wouldn't that disseminated to the airlines, wouldn't it be the airline's responsibility to comply with the directive? If so, wouldn't QFA be negligent in this?
This totally puts Airbus in the clear, since the AD is for the engines, not the aircraft; Rationale being that UAE and AFR are still flying theirs (albeit with GE/PW engines). But the question remains: who gets the blame: RR for the issue altogether with the Trent 900, or QFA for not responding to the AD?