The transport ministry has started an investigation into the fuel leaks involving a Japan Airlines Boeing 787 Dreamliner.
The Land, Infrastructure, Transport and Tourism Ministry has set up a team of experts at its Civil Aviation Bureau and will seek to determine the cause of the leaks.
On Monday afternoon, officials of the ministry and inspectors from the bureau examined the JAL plane in question at Narita International Airport.
Separately, JAL has also launched a detailed probe into the new midsize wide-body jet following the ministry’s instructions issued last Wednesday.
Fuel leaked from the plane just before it was scheduled to depart from Logan International Airport in Boston on Jan. 8.
Following its arrival at Narita the last Wednesday night, the plane underwent a checkup, but no abnormalities were detected. However, on Sunday afternoon, more fuel leaked from the aircraft while it was undergoing an inspection.
Currently, the fuel leaks are thought to have occurred because the valve connecting the plane’s fuel tanks, or another valve that should have been closed, was open.
Other problems reported with Boeing’s jet include a minor electrical fire, a broken windshield and faulty brake warning.