As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH RECEIVED "CHECK FIRE DET" WARNING LIGHT ILLUMINATED ASSOCIATED W/ FAULT NR 1 A & B LIGHTS ON THE ENG FIRE DETECTION PANEL. LANDING UNEVENTFUL. NO FIRE NOTED. FOUND C/B K-7 (FIRE DET. ENG. 1 IND.) POPPED. C/W C/B RESET PROCEDURE IAW GPM 9.2.2 AND AMM 26-11-00-710-801, SYS TEST GOOD. C/B REMAINS CLOSED. RETURNED TO SERVICE. NO PARTS REPLACED.