As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YVR - SMOKE DETECTOR WARNING LIGHT FLASHED BRIEFLY. MAINTENANCE PLACED NR 2 SMOKE DETECTOR ON MEL 26-5/2. NR 1 DETECTOR CHECKED OK. MAINTENANCE IN GEG, REPLACED NR 2 SMOKE DETECTOR, MEL CLEARED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.