As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO COMPARTMENT FIRE DETECTOR DOES NOT TEST. WORKS GOOD ON MASTER LIGHTS TEST. ACFT GROUNDED. ACCOMPLISHED FWD CARGO ELECTRONIC UNIT BITE TEST REF MM 23-16-02, NO FAULTS FOUND. CLEANED FWD CARGO SMOKE DETECTORS REF MM 26-16-01. OPS TEST NORMAL REF MM 26-16-00. SUCCESSFUL GROUND VERIFICATION, NO FAULTS FOUND.