The Federal Aviation Administration is only Boston carrier that flies the 50 ; 50 in service worldwide . Transportation Secretary Ray LaHood has said the Dreamliner will not be allowed back in service until Boeing proves the new design is safe . The 787 was grounded in May after 50 battery fires in Boston and Japan . The Federal Aviation Administration must still sign off on Boeing 's battery redesign .
The Federal Aviation Administration is only Boston carrier that flies the 50 ; 50 in service worldwide . The 787 was grounded in May after 50 battery fires in Boston and Japan . The Federal Aviation Administration must still sign off on Boeing 's battery redesign .