Airbus' new super-jumbo jet is being readied for its maiden voyage in France on Wednesday. This is setting up to be the biggest aviation event since the Concorde's first flight in 1969. A slight change in the weather could further postpone Wednesday's flight, which is already about a month behind schedule. Lately, the A380 project has been plagued by weight problems, contributing to much of the 1.9 billion (US) overspend. Airbus still claims its new aircraft will carry passengers five percent farther and at a cost that is one-fifth of its rival's longest range jet, the Boeing 747.