As long as a piece of string! I.e it can be anything.
The maiden flight of the Airbus A380 was 27-Apr-2005. It entered service with Singapore Airlines on 25-Oct-2007.
Each of the operating airlines will have local contractors at each airport which provide catering services.
A few of them are: LufthansaSingapore AirlinesAir FranceEmiratesQantasBritish Airways
The newest and biggest passenger airplane so far.it is a four engined double decker passenger plane