As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRSHUTTLE 5268 - FLG-PHX - AFTER CLIMB-OUT, THE FIRST OFFICER NOTICED SMOKE WAS COMING FROM UNDER THE PANEL. THE CREW DUMPED CABIN PRESSURE WHICH CLEARED THE SMOKE. THE CREW THEN DECLARED AN EMERGENCY AND LANDED IN PHX. MAINTENANCE T/S THE SYSTEM AND COULD NOT DUPLICATE THE DISCREPANCY. AIRCRAFT LANDED IN RETURNED TO SERVICE. (M)