As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORTS 4R DOOR ARMING LEVER WON'T STAY FLUSH AND OCCASIONALLY TRIGGERS CABIN PRESSURE WARNING LIGHT. MAINTENANCE FOUND INSULATION INHIBITING MOVEMENT OF THE CONTROL LEVER AND INSTALLED INSULATION PER AMM 52-13-11. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.