Boeing has agreed to plead guilty to a conspiracy fraud charge related to the 737 Max crashes, which killed 346 people. The company will pay a $243.6 million fine and have a third-party monitor installed to track its compliance. The deal spares Boeing from a trial as it tries to recover from safety and manufacturing crises. The guilty plea may complicate Boeing's ability to sell products to the US government, which accounted for 32% of its revenue last year.