As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MESSAGES FOR AFT CARGO COMPARTMENT SMOKE DETECTOR NUMBER 2 FLASHED CONTINUOUSLY AND NUMBER 1 DETECTOR FLASHED INTERMITTENTLY. MADE AN UNSCHEDULED LANDING AT JFK. ON THE GROUND THERE WERE NO MESSAGES. REPLACED THE LOGIC CARD (P/N 85N0028-136) AND THE NUMBER 2 DETECTOR (P/N 2156-604A). CHECK-C 5-8-99 LAX.