A Lufthansa Boeing 747-800, registration D-ABYA performing flight LH-501 from Rio De Janeiro Galeao,RJ (Brazil) to Frankfurt/Main (Germany) with 358 people on board, was climbing out of Rio de Janeiro when the crew stopped the climb at FL270 due to a problem with one of the engines (GEnx). The aircraft returned to Rio De Janeiro, dumped fuel and landed safely on runway 15 about 2.5 hours after departure.
Passengers reported the captain announced one of the engines was shut down.
The airline reported one of the engines showed low oil pressure, it is being investigated whether it was just an indication fault or a real problem. The passengers were taken to hotels and rebooked.
The occurrence aircraft is still on the ground in Rio de Janeiro about 64 hours after landing back.
On Aug 24th 2017 The Aviation Herald learned that the #3 engine (inboard right hand) showed metallic chips in two detectors and is being replaced.