In a ground test on a runway in South Carolina, the Boeing 787 Dreamliner expelled a piece of debris that landed on grass and caught fire, causing another setback for the $200 million passenger megaplane of the future.

According to the Chicago Tribune, the National Transportation Safety Board is in the "early stages" of investigating Saturday incident, which temporarily shut down the airport in North Charleston, South Carolina. Boeing is downplaying the ordeal as an innocuous sounding "engine issue". Though flying debris doesn't sound like anything not serious.

That's not the first problem the Dreamliner has had, which finally made its first commercial flight last year. The company recently discovered a fuselage problem that lead to delayed shipments and five 787s were grounded in Japan due to corrosion. Will it ever fly? [The Chicago Tribune]