FLT ATTENDANT RPT REGARDING NOISES OVERHEAD IN BUSINESS CLASS AREA OF AN MD11 ALONG WITH AN ELECTRICAL BURNING SMELL. AIR CONDITIONING PACK SHUT OFF; SMELL DIMINISHED. DIVERT.

Narrative

I WAS IN FIRST CLASS GALLEY AND HEARD A BANGING NOISE OUT IN FIRST CLASS. I WENT TO CHK IT ABOVE THE FIRST CLASS CREDENZA. I QUICKLY RAN UP TO COCKPIT AND SAID; 'SOMEBODY'S GOT TO COME LISTEN TO THIS NOISE.' PLT CAME OUT AND JUST THEN ALL FLT ATTENDANTS ON BREAK (3) FLEW OUT OF CREW REST DUE TO SMELL OF PLASTER IN THE CABIN. PURSER BEGAN CLBING THE CEILING; FEELING FOR HEAT IN AFT FIRST CLASS/BUSINESS CLASS GALLEY IN CREW BUNK AND PLT CAME BACK OUT TO WAKE HIM. PURSER INSTRUCTED US TO GET ALL HALONS AND PERSONAL BREATHING EQUIP AND PUT THEM ON FIRST CLASS CREDENZA. WE WERE TOLD WE WERE HEADED FOR BOSTON -- 45 MINS AWAY. THE PLTS TURNED OFF A PACK AND FIXED THE PROB. I NEVER SAW SMOKE IN THE CABIN. I HEARD A VERY LOUD NOISE IN THE CEILING IN AFT PART OF FIRST CLASS AND SMELLED A STRONG PLASTER SMELL. SMELL DISSIPATED. LANDED IN BOS TO CHK PLANE. SUPPLEMENTAL INFO FROM ACN 418453: FLT ATTENDANT SAID WE HAVE THE SMELL OF AN ELECTRICAL FIRE THROUGHOUT THE BUSINESS CLASS CABIN. WE GRABBED THE HALON AND PERSONAL BREATHING EQUIP AND PROCEEDED TO BUSINESS CLASS TO SEARCH FOR THE SOURCE OF THIS ODOR. AFTER CAPT TURNED OFF AIR CONDITIONING PACK; THE SMELL DISSIPATED.