Colleague Ashley Halsey III — who’s been on the case of the napping air traffic controllers since the start — with the details:

Hank Krakowski submitted his resignation Thursday morning to FAA Administrator Randy Babbitt, who said he accepted it, federal officials said.

Krawkoski joined the FAA in 2007. Prior to that he spent about 30 years at United Air Lines in senior management positions, including as vice president of flight operations.

“Hank is a dedicated aviation professional and I thank him for his service,” Babbitt said in a statement. “Starting today, I have asked David Grizzle, FAA’s chief counsel, to assume the role of acting ATO chief operating officer while we conduct a nationwide search to permanently fill the position.”

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