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PHILADELPHIA (CBS) — Captain Tammie Jo Shults says it got so loud in the cockpit that she communicated with her co-pilot partly with hand-signals during the Southwest Airlines emergency landing in Philadelphia.

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First Officer Darrin Elisor flew the plane, while Captain Shults talked with air traffic control.

southwest pilots Tammie Jo Shults Used Hand Signals To Communicate During Southwest Emergency Landing

Credit: (CBS3)

Shults says she wasn’t originally supposed to be on that flight.

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She traded a trip with her husband who is also a Southwest pilot.