A Qantas Airbus A380.
Ryan Fletcher/Shutterstock
A Qantas flight made a midair U-turn because paperwork wasn't finalized before takeoff.
The jet was on its way to Perth from Adelaide before it turned around over the ocean.
The flight eventually landed in Perth about four hours late.
A Qantas jet was forced to make a midair U-turn about an hour into a flight because its…

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