Regulation & law · 16/10/2008
Boeing Issues Airworthiness Directive for 747-400 Series Airplanes to Prevent Fuel Tank Fire
Boeing is adopting a new airworthiness directive requiring the installation of an extension tube to prevent a fire or explosion in the fuel tank of certain 747-400, 747-400D, and 747-400F series airplanes, following fuel system reviews by the manufacturer.