Tokyo: All Nippon Airways (ANA), which has the biggest fleet of Boeing 787 Dreamliner jets, cancelled another 78 flights scheduled for January 29-31, bringing total cancellations at the Japanese carrier since one of the planes made an emergency landing on January 16 to 459.

All Dreamliners have been grounded since January 17 because of unexplained battery problems.

ANA, which has 17 of the 50 Dreamliners that Boeing has delivered to airlines to date, said the cancellations have affected more than 58,000 passengers, adding that it would announce on Saturday which flights it will not run from February 1.