From Globo newspaper using google translator:

After three hours of flight, pilot discovers that he would not have fuel to reach Rio and return to Germany

BY DANIEL BRUNET 1/13/2017 12:10 PM

After three hours on the air, Lufthansa's LH 500 (Frankfurt-Rio), which took off at 9:30 p.m. on Monday, full of Brazilians, had a problem when flying over Africa. It is that the on-board computer identified an excessive fuel consumption by one of the turbines. With that, the airplane could not cross the Atlantic and arrive in Rio.
The pilot returned, and the gang resumed their trip the next day. Better that way.

original article: http://blogs.oglobo.globo.com/ancelm...-alemanha.html