As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: RIGHT AFT LAVATORY SMOKE DETECTOR--MESSAGE AND LIGHT. CONFIRMED NO SMOKE. ACCOMPLISHED AN OPERATIONAL TEST AND A SELF TEST OF THE RIGHT AFT LAVATORY 4F-R SMOKE DETECTOR REF AMM 26-13-00 PGBLK 501. ALL TESTS AND CHECKS NORMAL.