As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: STATUS MESSAGE, SMOKE DETECTOR 6 UPPER FLIGHT ATTENDANT REST DOOR 4. REMOVED AND REPLACED THE OVERHEAD FLIGHT ATTENDANT REST SMOKE DETECTOR AT BUNK NUMBER 6 IN UPPER CREW REST DOOR 4 PER AMM B787-A-26-14-21-00A-520A-A.