Boeing said on Sunday that it was aware of problems with a key safety indicator in 2017, but it didn’t inform airlines or the FAA until after the Lion Air crash a year later. Here, 737 Max jets built for American Airlines, left, and Air Canada are parked at the airport adjacent to a Boeing production facility in Renton, Wash., in April.

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Boeing said on Sunday that it was aware of problems with a key safety indicator in 2017, but it didn’t inform airlines or the FAA until after the Lion Air crash a year later. Here, 737 Max jets built for American Airlines, left, and Air Canada are parked at the airport adjacent to a Boeing production facility in Renton, Wash., in Apri