As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT AIR RETURNED TO ATL ON ACCOUNT OF LEFT HAND ENGINE FIRE INDICATION. NO ENGINE SHUTDOWN OCCURRED. FLIGHT DECLARED EMERGENCY. MAINTENANCE FOUND T/R OPENING ACTUATOR CONTACTING AND GROUNDING OUT ON CORE LOOP A. REPLACED HOSE IAW AMM 78-36-51-401. LEAK CHECKS GOOD. #1 ENGINE FIRE DETECTION SYSTEM CHECKS GOOD IAW AMM 26-12-00-710-002A.