The British heavy metal band's flying tour bus, Ed Force One, was supposed to land in Dortmund at the end of May (16) for the group's Rock im Revier Festival gig, but according to Spiegel, the 747-400 craft is too much for the runway.

Reports suggest pilot Bruce Dickinson and his bandmates will now land in Dusseldorf a day ahead of schedule and take a road-bound bus to the gig.

The band will join Anthrax and Slayer onstage at Rock im Revier, which begins on 26 May (16).

Iron Maiden recently upgraded their private plane to provide the group with extra cargo room.

"The greatest benefit of travelling in a 747 is that, because of its colossal size and freight capacity we can carry our stage production and all our stage equipment and desks in the cargo hold without having to make any of the immense structural modifications needed to do this on the previous 757," DICkinson said.