(CNN) — Boeing executives now expect the 737 Max will not be approved to fly until the middle of this year, the company said Tuesday.

“We are informing our customers and suppliers that we are currently estimating that the ungrounding of the 737 MAX will begin during mid-2020,” said a statement.

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Boeing shares were halted Tuesday afternoon, ahead of that release of news. The shares fell 5.5% before the halt.

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This is a developing story.

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