As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER CREW REST SMOKE DETECTOR ACTIVATED AFTER SHIP POWER TRANSFER. SMOKE ALARM TRIGGERED BY POWER TRANSFER, COMMON ON 777. ACCOMPLISHED CABIN SYSTEM ALL TEST, ALARM EXTINGUISHED AND NO FAULTS. INSPECTED CREW REST AND ALLOWED APRX. 2 HOURS WITH NO SMOKE OR ODOR DETECTED. THERE WAS NO RECIRC FAN REPLACED RECENTLY. SMOKE REPORT HAS BEEN ACCOMPLISHED. NO HISTORY OF SMOKE DETECT IN CREW REST. OVERHEAD FLIGHT CREW REST SMOKE DETECTION - OPERATIONAL TESTREFERENCE: TASK 26-14-30-740-803 REV