What was found
AT 27,000 FT, CABIN ALTITUDE RED WARNING EICAS, CREW PERFORMED AN EMERGENCY, DESCENDED TO 10,000 FT, APPROACHING 10,000 FT, THE CABIN ALTITUDE AUTO STATUS MESSAGE, CREW HEARD A LOUD AIR HISSING NOISE, COULDN`T DETERMINE SOURCE OF SOUND. REPOSITIONED & SECURED THE SUPPLY DUCTS. - DAMAGED PACK, REMOVED THE DAMAGED LINE & REPLACED WITH A TEMP FLEX LINE. R & R THE RIGHT PACK TUBE ASSY.