(CNN) Experiencing a little turbulence is pretty common for frequent fliers.

Looking out the window and seeing the plane's innards on display? Not so much.

Passengers aboard Delta Air Lines Flight 762 from Atlanta to Chicago got a little more than sloshed drinks when the cabin lights came on at 28,000 feet Sunday afternoon.

Those with a window seat got quite the view: The piece covering the plane's right engine -- or cowling, as it's called -- had come off.

As photos posted by CNN affiliate WTVF showed , the loose piece then appeared to have struck part of the fuselage.

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