As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT, DISCOVERED NR 14 SMOKE DETECTOR INOPERATIVE. MAYBE DEFERRED IAW MEL 26-6 DMI 13597 PLACARD INSTALLED. REF DMI 13597. DURING PREFLIGHT DISCOVERED NR 14 SMOKE DETECTOR INOPERATIVE. REMOVED AND REPLACED BOTH BEACON AND TEST LAMP ON NR 14 SMOKE DETECTOR. CHECKED OPS OK IAW SMM 26-15-0. DMI 13597 CLEARED.