Modern aircraft are generally largely aluminium semi-monocoque structures. The first commercial aircraft to feature fly-by-wire technology was the [[Airbus]] A320.<ref name="civilavionics">{{cite book |author1=Ian Moir |author2=Allan G. Seabridge |author3=Malcolm Jukes |title=Civil Avionics Systems |publisher=Professional Engineering Publishing Ltd. |location=London (iMechE) |year=2003|ISBN=1-86058-342-3}}</ref> | Modern aircraft are generally largely aluminium semi-monocoque structures. The first commercial aircraft to feature fly-by-wire technology was the [[Airbus]] A320.<ref name="civilavionics">{{cite book |author1=Ian Moir |author2=Allan G. Seabridge |author3=Malcolm Jukes |title=Civil Avionics Systems |publisher=Professional Engineering Publishing Ltd. |location=London (iMechE) |year=2003|ISBN=1-86058-342-3}}</ref> |