As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HNL - FLT 1552 - CLIMBING THROUGH 6500-7500 FT, THE AIRCRAFT WAS PRESSURIZED, THE MASTER WARNING LIGHT ILLUMINATED CONCURRENTLY WITH THE 'PASS DOOR' WARNING LIGHT. NOTIFIED ATC AND DECLARED AN EMERGENCY, RETURNED HNL TO LAND. INSPECTED AFFECTED SYSTEM AND DEFERRED IAW MEL 52-2. DOOR SENSORS WERE CLEANED AND MEL CLEARED. (M)