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What: Turkish Airlines Boeing 737-800 en route from Istanbul Ataturk to Vienna
Where: Turkey
When: Jul 18th 2010
Why: The Turkish Airlines Boeing took off successfully, but a subsequent plane lining up for takeoff reported parts on the runway.
The parts turned out to be the engine cowling around the thrust reverser from the Turkish Airlines Boeing. The Boeing returned to Istanbul and made a safe landing. An alternative (Airbus) is being flown in as a replacement.