The directive outlines the modifications necessary for the much-anticipated Dreamliner to fly again after faulty battery systems grounded the aircraft earlier this year . Boeing posts Airworthiness Directive for Boeing . The directive is set to go into effect more than three months . It outlines required modifications that must be inspected before flight . nine Boeing 787s have been grounded Friday .
Boeing posts Airworthiness Directive for Boeing . The directive is set to go into effect more than three months . It outlines required modifications that must be inspected before flight . nine Boeing 787s have been grounded Friday .