What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) American airlines flight 1907 departed San Francisco International Airport for los angeles on June 13, 2004, and soon after takeoff the crew reported smoke and fumes in the cabin. The crew declared an emergency to air traffic control, turned off the recirculation fan and returned to San Francisco International Airport without further incident.
As the FAA filed it
(-23) AMERICAN AIRLINES FLIGHT 1907 DEPARTED SAN FRANCISCO INTERNATIONAL AIRPORT FOR LOS ANGELES ON JUNE 13, 2004, AND SOON AFTER TAKEOFF THE CREW REPORTED SMOKE AND FUMES IN THE CABIN. THE CREW DECLARED AN EMERGENCY TO AIR TRAFFIC CONTROL, TURNED OFF THE RECIRCULATION FAN AND RETURNED TO SAN FRANCISCO INTERNATIONAL AIRPORT WITHOUT FURTHER INCIDENT.