Regulation & law · 27/11/2001

Boeing Proposes New Airworthiness Directive for 747-100, -200, -300, 747SP, and 747SR Series Airplanes

Boeing is proposing a new airworthiness directive to add repetitive inspections for cracking of upper deck floor beams on certain 747 models, following fatigue testing that revealed severed upper chords due to cracking, in an effort to prevent loss of structural integrity and rapid depressurization.