미 항공당국 "보잉 737 맥스 부품결함"...교체명령
American aviation regulators said on Sunday there could be more faulty parts involving Boeing's 737 MAX airplanes, which have been already grounded since March following two fatal crashes.
The U.S. Federal Aviation Administration said 148 leading-edge slat tracks used on Boeing's 737 MAX and 737 NG aircraft may have defects.
Leading-edge slats are movable panels that extend along the front of the wing to help with takeoffs and landings.
The FAA plans to require those parts to be quickly replaced.
