The fires must be traveling through the underground fuel pipes.

Power cables were later laid alongside the existing fuel pipes.

Among some safety board investigators, static electricity and the fuel pipe have been suspects since a few days after the crash.

The fuel pipe ends in a nozzle with a flexible ball joint.

After connecting the fuel pipe to the Vision 1, the gas starts to leak from the pipes.

The fuel pipes were severed so both engines died.

And please get me some engineers so that we can repair that fuel pipe.

They watched as a tractor-mounted robot disconnected a fuel pipe from the drive, then rolled back.

But 68 seconds into the flight, violent vibrations broke a fuel pipe.

Cables and fuel pipes joined it higher up.