As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 5 SMOKE DETECTOR WILL NOT TEST. DEFERRED NR 5 SMOKE DETECTOR PER MEL 26-6-2, ASSIGNED CONTROL 12688, CAT-C. PLACARD INSTALLED. REFER TO DMI 12688. NR 5 SMOKE DETECTOR WILL NOT TEST. RELAMPED NR 5 SMOKE DETECTOR AND TESTED GOOD AS PER M/M 26-10-5. THIS CLEARS DMI 12688.