As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - FLT 587 - EN ROUTE JFK-SDQ, SHORTLY AFTER TAKEOFF CREW REPORTED FIRST CLASS LAVATORY SMOKE DETECTOR CAME ON. RETURNED JFK AND LANDED WITHOUT FURTHER INCIDENT. REPLACED NR 1 FLIGHT WARNING COMPUTER. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)