US Airways A333 at Athens on May 27th 2014, engine vibrations

A US Airways Airbus A330-300, registration N271AY performing flight US-759 from Athens (Greece) to Philadelphia,PA (USA), was climbing through FL150 out of Athens when the crew stopped the climb reporting an unsual popping noise but no adverse indications. The aircraft entered a hold over Egina at FL070 and dumped fuel. The crew subsequently reported engine (PW4168) vibrations. The aircraft landed safely on Athens' runway 03L about 90 minutes after departure.

The flight was cancelled.