What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During pushback from the parking space in Rio De Janeiro (gig) it appears that the ground personnel may have not inform the captain to set the parking brake prior to disconnecting the tow bar from the tug after the push had been completed. With the engine running and the tow bar disconnected from the tug the aircraft starting rolling forward striking the tug. At that time the captain noticed the aircraft veer to the right followed by a loud noise. The captain applied the breaks and shutdown all engines to investigated what happened.
As the FAA filed it
DURING PUSHBACK FROM THE PARKING SPACE IN RIO DE JANEIRO (GIG) IT APPEARS THAT THE GROUND PERSONNEL MAY HAVE NOT INFORM THE CAPTAIN TO SET THE PARKING BRAKE PRIOR TO DISCONNECTING THE TOW BAR FROM THE TUG AFTER THE PUSH HAD BEEN COMPLETED. WITH THE ENGINE RUNNING AND THE TOW BAR DISCONNECTED FROM THE TUG THE AIRCRAFT STARTING ROLLING FORWARD STRIKING THE TUG. AT THAT TIME THE CAPTAIN NOTICED THE AIRCRAFT VEER TO THE RIGHT FOLLOWED BY A LOUD NOISE. THE CAPTAIN APPLIED THE BREAKS AND SHUTDOWN ALL ENGINES TO INVESTIGATED WHAT HAPPENED.