Britain's Heathrow airport said on Friday it had closed both its runways after a fire aboard an Ethiopian Airlines plane.
A Heathrow spokeswoman said fire services were attending the incident but could not provide any more details. There were no passengers aboard the plane.
The was a Boeing 787 Dreamliner jet operated by Ethiopian Airlines, footage on Britain's Sky News channel showed.
The new, lightweight jet suffered a series of battery fires earlier this year, leading the plane to be grounded for several weeks until Boeing came up with a satisfactory fix.
Boeing shares were down 5 percent in New York.