How many variants of 737 MAX planes does Boeing make?
The U.S. Federal Aviation Administration (FAA) barred Boeing from expanding the production of its best-selling 737 MAX aircraft last week, after a mid-air cabin panel blowout forced an Alaska Airlines-operated MAX 9 to make an emergency landing.
The FAA launched a formal investigation into the 737 MAX 9, grounding the planes for safety checks and tightening oversight of Boeing itself on January 12, after the Ala