As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF, FIRST FLIGHT ATTENDANT REPORTS CAUTION LIGHT FLASHING CIDS PANEL SLIDE L3 PRESSURE NEEDS TO BE CHECKED. ALL INDICATIONS COCKPIT ECAM NORMAL. L3 SLIDE PRESSURE CHECKED ON GROUND AND IN GREEN, PREVIOUSLY WRITTEN UP. REMOVED AND REPLACED (DECODER/ENCODER UNIT) DEU B (300RH6) IAW AMM 23-73-47. OPS CHECKED GOOD, ALL INDICATIONS AND L3 SLIDE PRESSURE NORMAL.