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Contact photographer Markus Altmann
What: TAP Air Portugal Airbus A340-300 en route from Lisbon to Luanda
Where: Lisbon
When: Dec 6 2010
Why: En route over the airport, the crew received a fuel filter error message, and returned to Lisbon to make a safe landing. The flight circled for an hour and dumped fuel; and was back in the air on Tuesday.

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Air India flight AI-120 had to divert and make an emergency landing in Tehran, Iran, on August 9th.