As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 1 ENGINE FIRE PULL HANDLE & ENGINE / OVERHEAT LIGHTS DO NOT ILLUMINATE DURING FIRE TEST. GROUNDED - YES. ACCOMPLISHED ENGINE/APU FIRE DETECTION CONTROL MODULE BITE PROCEDURE. INSPECTED AND FOUND #1 ENGINE UPPER FAN FIRE DETECTOR INOP. RMVD AND INSTALLED NEW UPPER FAN DETECTOR REF B737-800 AMM TASK 26-11-01-000-802. ACCOMPLISHED SYS OPS TEST REF AMM TASK 26-11-00-710-801. ENGINE FIRE DETECTION - OPERATIONAL TEST. SYS CKS NML.