As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS STATUS MESSAGE DET CHAN 1 CARGO AFT, FOUND AFTER ACFT RELEASE. TROUBLESHOT AND FOUND WIRE NR W4263-2020B-24 SHORTED TO SHIELD, (GROUND). REPAIRED WIRE WITH SPLICE KIT (D150-0174). PERFORMED OPERATIONAL CHECK OF AFT CARGO COMPARTMENT SMOKE DETECTION SYSTEM AND GROUND OPS CHECKED NORMAL.