Business · 05/11/2004

FAA Proposes New Airworthiness Directive for Boeing 747 Series Airplanes to Address Fatigue Cracking of Upper Deck Floor Beams

The Federal Aviation Administration (FAA) is proposing a new airworthiness directive (AD) for certain Boeing 747-100, 747-100B, 747-100B SUD, 747-200B, 747-300, 747SP, and 747SR series airplanes to address fatigue cracking of the upper chord of upper deck floor beams, which could lead to rapid depressurization and loss of controllability of the airplane.