The US Federal Aviation Administration on Sunday disclosed a new problem involving Boeing Co’s grounded 737 MAX, saying that more than 300 of that troubled plane and the prior generation 737 may contain improperly manufactured parts and that the agency will require these parts to be quickly replaced.
The Federal Aviation Administration (FAA) said up to 148 of the part known as a leading-edge slat track that were manufactured by a Boeing supplier are affected, covering 179 MAX and 133 NG aircraft worldwide. Slats are movable panels that extend along the wing’s front during takeoffs and landings to provide additional lift. The tracks guide the slats and are built into the wing.