What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: trans brazil landed on runway 12 at iad and was told to taxi via the reverse high speed to the gate. Due to icy conditions on the taxiway trans brazil 797 slid off the paved surface which caused the nose wheel to get stuck in the mud. Aircraft was towed out of the mud and taxied to the gate without further incident.
As the FAA filed it
NARRATIVE: TRANS BRAZIL LANDED ON RUNWAY 12 AT IAD AND WAS TOLD TO TAXI VIA THE REVERSE HIGH SPEED TO THE GATE. DUE TO ICY CONDITIONS ON THE TAXIWAY TRANS BRAZIL 797 SLID OFF THE PAVED SURFACE WHICH CAUSED THE NOSE WHEEL TO GET STUCK IN THE MUD. AIRCRAFT WAS TOWED OUT OF THE MUD AND TAXIED TO THE GATE WITHOUT FURTHER INCIDENT.