As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 ENG RT FIRE BOTTLE FAILED TO DISCHARGE DURING ENG FIRE. REPLACED NR 3 ENGINE LT AND RT FIRE BOTTLES, OPS GOOD, SQUIB TEST OK PER MM 26-21-03. THE RIGHT FIRE BOTTLE DISCHARGE TUBE WAS FOUND TO HAVE BEEN INSTALLED WITH ONLY 3/4 OF A THREAD ENGAGED AND HAND TIGHT. BOTTLE DISCHARGE FITTING WAS SEVERELY CROSS-THREADED. WHEN THE BOTTLE WAS DISCHARGED, THE DISCHARGE TUBE WAS BLOWN OFF.