Overview

• The AAIB found that both engine fuel control switches moved from RUN to CUTOFF almost simultaneously three seconds after takeoff, causing total thrust loss.
• Voice recordings capture pilots asking “why did you cut the fuel?” and each denying responsibility as the engines failed.
• Investigators have dismissed fuel contamination and flight control malfunctions and U.S. agencies reported no technical defects in the airframe or GEnx engines.
• The preliminary report does not assign blame or determine whether the fuel cutoff was accidental or intentional.
• Regulators are considering new safety directives on fuel-switch safeguards for Boeing 787 Dreamliners but have not issued any immediate mandates.