As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A DURING CLIMB NR 3 ENG FIRE DETECT FAULT LIGHT ILLUMINATED CHANNEL A NEEDLE WAVERED IN RED/ORANGE BAND. STABLE IN GREEN BAND ONCE POWER REDUCED. SELECTED CHANNEL B ONLY. NR 3 ENG FIRE DETECTOR -A- INOP. REF M23 4208. RESEATED THE A-3/A-7 WARNING AND CONTROL CARDS IAW MM 26-10-0 0, CHECKS GOOD.