What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
After take-off the abovementioned aircraft returned to Palm Springs Regional Airport. This turn back was initiated due to an instrument fire warning indication on number two engine. Number one fire bottle was activated by the pilot in command to extinguish fire, with no positive results. Number two fire bottle was also activated with the same results. After landing safely, further investigation revealed that a fire never existed and this situation was an indication problem only. Malfunction or defect reports were submitted by garret aviation.
As the FAA filed it
AFTER TAKE-OFF THE ABOVEMENTIONED AIRCRAFT RETURNED TO PALM SPRINGS REGIONAL AIRPORT. THIS TURN BACK WAS INITIATED DUE TO AN INSTRUMENT FIRE WARNING INDICATION ON NUMBER TWO ENGINE. NUMBER ONE FIRE BOTTLE WAS ACTIVATED BY THE PILOT IN COMMAND TO EXTINGUISH FIRE, WITH NO POSITIVE RESULTS. NUMBER TWO FIRE BOTTLE WAS ALSO ACTIVATED WITH THE SAME RESULTS. AFTER LANDING SAFELY, FURTHER INVESTIGATION REVEALED THAT A FIRE NEVER EXISTED AND THIS SITUATION WAS AN INDICATION PROBLEM ONLY. MALFUNCTION OR DEFECT REPORTS WERE SUBMITTED BY GARRET AVIATION.