As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LOWER COMPARTMENT FIRE LIGHT CAME ON FOR THE FORWARD A COMPARTMENT. THE FIRE WARNING LIGHT WENT OUT & CHANGED TO A MAINT LIGHT. THE LOWER COMPARTMENT LIGHT WAS ON LESS THAN 20 SEC BEFORE IT CHANGED TO MAINT LIGHT. PERFORMED T/S TO THE LOWER CARGO FIRE WARNING SYS FOUND CCU FAULTY BUT DID NOT FIX PROBLEM. WITH FWD A BELLY 31 STILL SHOWS INOPERATIVE BATTERY FA 12560 SHOWS LOW DEFERRED PIT 31.