What was found
AIRCRAFT WAS GROUNDED: UNABLE TO OPEN COCKPIT DOOR TO CABIN. UPPER PLUNGER DOES NOT RETRACT WHEN HANDLE IS TURNED TO THE OPEN POSITION. REMOVED AND REPLACED THE CENTER DOOR LATCH ASSEMBLY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: UNABLE TO OPEN COCKPIT DOOR TO CABIN. UPPER PLUNGER DOES NOT RETRACT WHEN HANDLE IS TURNED TO THE OPEN POSITION. REMOVED AND REPLACED THE CENTER DOOR LATCH ASSEMBLY.