Singapore Airlines' A380 superjumbo jet sustained superficial damage when it rolled onto grass as it left an airport terminal in the first glitch for the world's biggest passenger plane since going into service in October, the airline said Friday.

The plane was getting ready to depart from Singapore's Changi Airport to Sydney late Thursday. It was carrying 446 passengers who disembarked, and no injuries were reported, the airline said.

"The damage is very limited, it's superficial in the sense that there is possibly damage to tires, but nothing to the structure of the aircraft," said Singapore Airlines spokesman Stephen Forshaw.

The aircraft rolled onto the grass off the tarmac after a truck that was pushing the plane failed and disconnected from the plane. The plane was not running on its own power at the time, the airline said in a statement.

Singapore Airlines is the launch customer of the Airbus A380, the world's largest passenger jet, and there is only one such plane in service so far. It began daily flights from Singapore to Sydney in October.

"The engineers are still doing a very careful inspection of the plane. They're being very careful because it's the first time and they just want to be very sure," Forshaw said.