What was found
DURING A LINE MAINTENANCE CHECK, THE NUMBER 4 CARGO SMOKE DETECTOR DID NOT TEST. REMOVED AND REPLACED THE SMOKE DETECTOR, OPERATIONALLY CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING A LINE MAINTENANCE CHECK, THE NUMBER 4 CARGO SMOKE DETECTOR DID NOT TEST. REMOVED AND REPLACED THE SMOKE DETECTOR, OPERATIONALLY CHECKED GOOD.