As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMMEDIATELY AFTER TAKEOFF 'EICAS MSG'. WITH SMOKE DETECTOR MAKING LOUD BEEPING NOISE. AFTER 1 HOUR EICAS MSG WENT AWAY AND SMOKE DETECTOR STOPPED BEEPING, NO SMOKE DETECTED. ALL ASSOCIATED DUCTING CHECKED FROM CREW REST AREA TO STATION 950. NIL ABNORMALITIES FOUND. SMOKE DETECTOR CHECKED AND ASSOCIATED WIRES CHECKED OK. (M)