CABIN ATTENDANT RPT; S80; DFW; PBI; AT FL310; DECOMPRESSION OCCURRED; OXYGEN MASKS DIDN'T DEPLOY. RETURN TO DALLAS FOR MAINT. LOGBOOK HISTORY.

Narrative

AT FL310; APPROX 30 MINS AFTER TKOF; I HEARD A LOUD BANG AND COULD HEAR A VERY LOUD RUSH OF AIR THROUGH THE CABIN. I COULD ALSO FEEL THE FLOOR UNDER MY FEET VIBRATE. I IMMEDIATELY RPTED TO THE COCKPIT. AFTER CHKING THE COCKPIT INSTS; THE ACFT BEGAN DSNDING TO LOWER ALT; OXYGEN MASKS NEVER DROPPED; THE FLT RETURNED TO DFW. ACFT HAD HISTORY OF LOSS OF CABIN PRESSURE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT IN FIRST CLASS; THE PAX FELT RUMBLING UNDERNEATH THEIR FEET AND EVERYONE'S EARS STARTED HAVING PROBS. SHE WENT UP TO THE COCKPIT AND THEY WEREN'T AWARE THAT ANYTHING HAD HAPPENED; AND JUST AS SHE FINISHED TELLING THEM; THE COCKPIT INSTS STARTED GOING WILD. THE PLTS IMMEDIATELY DONNED MASKS AND STARTED AN IMMEDIATE DSCNT. THEY TOLD THE CABIN CREW THAT THEY DIDN'T HAVE TO DON WALK-AROUND OXYGEN BOTTLES AND THAT THERE WAS NO NEED TO PREPARE THE PAX FOR AN EVAC. THEY COULD CONTINUE SERVING; BUT NOT TO HAVE ANY CARTS IN THE AISLE. THE CAPT SAID THAT THE LOGBOOK SHOWED THAT THE PLANE'S LAST FLT HAD BEEN A WK AGO; AND THAT IT HAD CLBED TO 10000 FT AND HAD ANOTHER DECOMPRESSION. THE MECHS HAD REPLACED ALL SORTS OF SEALS AND GND TESTED IT AND SENT IT OUT AGAIN ON THEIR TRIP. SHE SAID THAT THERE WAS EXCELLENT CABIN/COCKPIT COM AND COORD. THE PLANE WAS TAKEN OTS AGAIN.