A KLM Boeing 777 operating flight #KL751 returned to Amsterdam. KLM flight #KL751 to Quito declared an emergency West of Portugal. The Boeing 777-200ER performed a U-turn about 2 hours into the flight.
The aircraft (reg. PH-BQP) took off at 10:16 from Amsterdam runway 18L and landed on runway 18R almost 5 hours later. The crew decided to return to Amsterdam due to an engine fire indication.
Source: Airlive