What was found
AFT CARGO SMOKE DETECTOR 'B' LOOP WILL NOT TEST. REMOVED DUST FROM COOLING FAN ON AFT CARGO SMOKE DETECTOR B LOOP. PERFORMED OPERATIONAL TEST PER M/M 26-23-01.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFT CARGO SMOKE DETECTOR 'B' LOOP WILL NOT TEST. REMOVED DUST FROM COOLING FAN ON AFT CARGO SMOKE DETECTOR B LOOP. PERFORMED OPERATIONAL TEST PER M/M 26-23-01.