As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MESSAGE AFT CARGO SMOKE DETECTION ZONE 1 ILLUMINATED. REMOVED AND REPLACED AFT CARGO LOWER SMOKE DETECTOR PER AMM. TEST FAILED, CHANNEL 2 INTERNAL FAULT LOWER AFT MESSAGE 26-20022. CURRENTLY NO STATUS OR EICAS MESSAGE. AFT CARGO PIT MAY BE USED. REPLACED AFT CARGO SMOKE DET, OPS OKAY.