What: Ryanair Boeing 737-800 en route from Lanzarote Spain to London
Where: Porto
When: Jun 2nd 2011
Why: The flight was east of porto when the pilot saw an indication of engine problems (technical malfunction.) The pilot diverted to Porto and made a safe landing at Porto.
Passengers disembarked normally on the apron, without emergency slides.
Media reported smoke although Ryanair said there was no smoke.
A replacement jet was provided.

Turkish Airlines flight TK-1665 made an emergency landing at Istanbul Ataturk Airport, Turkey, on August 22nd.
Flybe flight BE-321 made an emergency landing in Birmingham, England, on September 11th.

Cathay Pacific flight CX-301 made an emergency landing in Dublin, Ireland, on July 28th.