미 항공당국 "보잉 737 맥스 부품결함"...교체명령
U.S. aviation regulators have said there could be more faulty parts involving Boeing's 737 MAX airplanes, which have been 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 takeoff and landing.
The FAA said it will require those parts to be quickly replaced.
