Airbus suggested that the A340 and the A330 were essentially identical except for their engine number, and that the A340's experience could be applied to the A330's ETOPS approval.
Airbus mente, at A340 og A330 essentielt var ens, bortset fra deres motorantal, og at erfaringer med A340-modellen kunne bruges til A330's ETOPS-godkendelse.