What was found
AIRCRAFT WAS NOT GROUNDED: 4L DOOR PRESSURE LOW AS INDICATED BY FLIGHT ATTENDANTS PANEL. MAINTENANCE REPLACED THE 4L DOOR DAMPER AND EMERGENCY OPERATION CYLINDER DIAPHRAGM AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS NOT GROUNDED: 4L DOOR PRESSURE LOW AS INDICATED BY FLIGHT ATTENDANTS PANEL. MAINTENANCE REPLACED THE 4L DOOR DAMPER AND EMERGENCY OPERATION CYLINDER DIAPHRAGM AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.