All Boeing 737 Max aircraft are grounded while the manufacturer fixes a deadly defect in their flight control system. These Southwest Airlines planes were parked in Victorville, Calif., in March.
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A Boeing 737 MAX 8 airplane sits on the assembly line on March 27, in Renton, Wash. Boeing is slowing production of its grounded Max airliner while it works on fixing flight-control software in the wake of fatal crashes.
Ted S. Warren/AP