THE A330 AND A340: COMMON THINKING, DIFFERENT PROPULSION CHOICES
Airbus developed the A330 twin and four-engine A340 as related wide-body products. The A330 first flew in 1992. The manufacturer describes it as building on earlier wide-body development and the operational philosophy established by the A320. The programme later evolved into the A330neo, with new engines and aerodynamic changes. A familiar family name can therefore span materially different aircraft standards. [28, Pioneering beginnings and A330neo evolution]
An operator chronology supplies a separate milestone: Lufthansa records receiving its first A340-200 in February 1993. This is a delivery event, rather than a first-flight date. It marks the introduction of the new long-range aircraft into airline fleets, while the A321 would soon extend the single-aisle family. More than one market segment was being developed at the same time. [22, 2 February 1993 entry]
The historical connection does not justify using A330 or A340 fuel, engine-out or performance procedures in a Fenix ceo flight. Commonality concerns design and training strategy. Actual procedures must still match the aircraft, engine, equipment and operating standard. System explanations consequently need more precision than an undifferentiated Airbus way of doing things. [23, Aircraft-specific Standard Operating Procedures]