The FAA placed a cap on Boeing's bestselling 737 Max jets in January to slow production after a door plug flew off the fuselage of a 737 Max 9 during an Alaska Airlines flight shortly after takeoff from Portland, Oregon. This week, Boeing said it shipped only 27 planes in February, including only 17 Max jets. Before the Jan. 5 door plug incident, Boeing had been shipping 38 Max planes per month, and hoped to expand production this year. This slowdown has had ripple effects across the industry.