What was found
FLIGHT ATTENDANTS REPORTED BURNING SMELL IN LDMCR, INCREASED IN STRENGTH OVER TIME AND WAS CONFIRMED BY PURSER AND CAPTAIN. 5 FLIGHT ATTENDANTS EXPERIENCED SYMPTOMS OF HEADACHES, BURNING NOSE, EYES AND TIGHTNESS OF CHEST WITH 1 FLIGHT ATTENDANT BEING ADMINISTERED OXYGEN BY A PHYSICIAN. LANDING WAS UNEVENTFUL. THE LDMCR HEATER AND RECIRCULATION FILTER WERE REPLACED AND SEALANT BELOW THE STAIRWAY THAT WAS FOUND NOT CURED WAS REMOVED.