Another Day, Another Little Problem on the Production Line at Boeing
The GE Aerospace turbofans powering the Boeing 777 might have some issues with contaminated iron, with pieces of the high-pressure turbine discs, rotor spools, and compressor seals affected. A proposed airworthiness directive follows a string of GE Aerospace findings pointing to “iron inclusion” in powdered metal parts. The additional iron represents a weak point in the engine, resulting in parts that fail to meet longevity and strength specifications as designed. The AD is on track to become a final order once the comment period ends on October 20th.