A Delta Airlines Boeing 767-400, registration N840MH performing flight DL-131 from Munich (Germany) to Atlanta,GA (USA) with 257 people on board, was enroute at FL300 about 190nm northeast of Amsterdam (Netherlands) when the crew reported engine #1 (CF6, left hand) vibrations. The aircraft drifted down to FL200 and diverted to Amsterdam for a safe landing on runway 18R about 30 minutes after leaving FL300.

The remainder of the flight was cancelled.

The occurrence aircraft is still on the ground in Amsterdam 12 hours after landing.