More Dreamliner problems emerge at All Nippon Airways
There are new problems for Boeing as the Paris Air Show kicks off.
Japan's All Nippon Airways last week cancelled a 787 Dreamliner flight, because an engine refused to start. Meanwhile Japan Airlines also cancelled a service last week after problems with the plane's anti-icing system.
The 787 Dreamliner has only recently taken to the skies again after a global grounding of about three months due to battery related issues.
The BBC's Rupert Wingfield-Hayes reports from Tokyo.