Read MoreThe US regulator says the 737-900ER fleet uses the same door design as the grounded 737 Max 9s.The US regulator says the 737-900ER fleet uses the same door design as the grounded 737 Max 9s.

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Read MoreThe US regulator says the 737-900ER fleet uses the same door design as the grounded 737 Max 9s.The US regulator says the 737-900ER fleet uses the same door design as the grounded 737 Max 9s.