As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) LH ENGINE FIRE DETECTION SYSTEM FAULTY - INVESTIGATION COULD FIND NO FAULTS WITH THE SYSTEM - A LEAKING GASKET ON THE FLOW PACK MAYHAVE ALLOWED HOT AIR ONTO THE LOWER REAR SENSOR - FOLLOWING REPLACEMENT OF THE FLOW PACK ON THE NEXT FLIGHT THE FIRE WARNING SYSTEM AGAIN ACTIVATED - FURTHER INVESTIGATION FOUND THE TWO REAR BULKHEAD FIRE SENSORS TO BE FAULTY