Boeing 787 aircraft grounded after battery problem in Japan
15 January 2014 Last updated at 03:56 GMT
Japan Airlines has grounded a Boeing 787 Dreamliner aircraft after detecting smoke or gases that may have come from faults with the main battery.
The problem was discovered during routine maintenance, and is a reminder of the battery faults that grounded all 787s for three months last year.
Rupert Wingfield-Hayes reports