What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The pilot took off from hayward airport for a routine traffic watch flight. Approx 2 hours into the flight over highway 4 in Concord/pittsburg CA the aircraft developed a rough engine. Enroute to Concord airport the aircraft started to lose oil pressure and smoke was seen coming from the tail of the aircraft. The pilot chose to land the aircraft on highway 4, thinking he would not make it to Concord which was approx 5 miles away. The pilot landed the aircraft on highway 4 with traffic without incident.
As the FAA filed it
(-23) THE PILOT TOOK OFF FROM HAYWARD AIRPORT FOR A ROUTINE TRAFFIC WATCH FLIGHT. APPROX 2 HOURS INTO THE FLIGHT OVER HIGHWAY 4 IN CONCORD/PITTSBURG CA THE AIRCRAFT DEVELOPED A ROUGH ENGINE. ENROUTE TO CONCORD AIRPORT THE AIRCRAFT STARTED TO LOSE OIL PRESSURE AND SMOKE WAS SEEN COMING FROM THE TAIL OF THE AIRCRAFT. THE PILOT CHOSE TO LAND THE AIRCRAFT ON HIGHWAY 4, THINKING HE WOULD NOT MAKE IT TO CONCORD WHICH WAS APPROX 5 MILES AWAY. THE PILOT LANDED THE AIRCRAFT ON HIGHWAY 4 WITH TRAFFIC WITHOUT INCIDENT.