As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CHECK FIRE DETECTOR WARNING LIGHT ILLUMINATED CONCURRENTLY WITH HTE FAULT A LIGHT ON NR 1 ENGINE. THERE WERE NO OTHER FIRE OR SMOKE INDICATIONS. NR 1 ENGINE PRIMARY ZONE ADVANCE PNEUMATIC DETECTOR WAS REPLACED IAW AMM 26-11-01-400-801. "CHECK FIRE DET" AND "FAULT A" LIGHTS NO LONGER ILLUMINATED.