As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE LIGHT AND ADVISORY SMOKE MESSAGE DOES NOT TEST (FAILED). REPLACED EQUIP COOLING SMOKE DETECTOR WITH BORROWED PART. PART THAT WAS REMOVED PN 2156-604A S/N 20380B, PART INSTALLED PN 2156-604A SN 12443B. PERFORMED OPERATION TEST OF EQUIP COOL SW.