A FLT ATTENDANT WAS INJURED AFTER TRIPPING ON A HEADSET CORD WHILE SHE WAS DEALING WITH EFFLUENT FROM THE LAV THAT HAD BACKED UP INTO THE SINK; OVERFLOWING AND RUNNING OUT THE LAV DOOR.

Narrative

DURING THE DSCNT FOR APCH INTO ORD; FLT ATTENDANT TRIPPED ON A HEADSET CORD AND FELL; INJURING HER WRIST AND HEAD. THE PURSER NOTIFIED US AFTER LNDG. WHILE TAXIING IN TO THE GATE THE 'BUNKY' NOTIFIED DISPATCH OF THE INCIDENT AND REQUESTED A FLT ATTENDANT SUPERVISOR MEET THE ACFT. I TALKED TO THE FLT ATTENDANT AFTER THE FLT AND WHILE SHE APPEARED TO BE IN SOME PAIN; HER INJURIES DID NOT SEEM TO BE SERIOUS. POSSIBLY CONTRIBUTING TO THIS INCIDENT; THE PURSER TOLD ME THAT THE INJURED FLT ATTENDANT WAS BUSY PLACING BLANKETS AROUND THE BOTTOM OF ONE OF THE LAVS BECAUSE THE LAV HAD BACKED UP INTO THE SINK AND EFFLUENT WAS RUNNING OUT UNDER THE LAV DOOR. APPARENTLY; SHE TRIPPED ON THE HEADSET CORD WHILE DEALING WITH THE BROWN LIQUID COMING OUT FROM UNDER THE LAV DOOR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THIS IS A RECURRING PROB ON THE B777. THIS RPTR HAS HAD TWO OCCURENCES WITHIN THE LAST MONTH AND TWO ON PREVIOUS OCCASIONS. DISCUSSIONS WITH MAINT AFTER LNDG REVEALED THAT THERE IS A VALVE IN THE WASTE SYSTEM THAT STICKS; CAUSING THE BACKUP. IT IS USUALLY FREED BY TAPPING ON THE VALVE. THE LAV INVOLVED IN THIS CASE WAS BUSINESS CLASS. PREVIOUS OCCURENCES WERE EITHER BUSINESS OR FIRST CLASS.