A B757-200 RETURN LAND SIT WHEN AN ENG OVERHEAT OCCURS FOLLOWED BY LOSS OF CABIN PRESSURE.

Narrative

I WAS THE CAPT ON BOARD A B757-200 FROM CLT TO LAX. ON CLBOUT TO FL350; THE L ENG OVERHEAT EICAS MESSAGE APPEARED AT FL280. FOLLOWED ENG OVERHEAT PROCS. AT FL310; CABIN PRESSURE CLBED TO 10000 FT. EMER DSCNT WAS INITIATED TO FLT LEVEL ALT OF 10000 FT. AN EMER WAS DECLARED WITH CLT APCH CTL. A SUCCESSFUL OVERWT LNDG WAS PERFORMED ON RWY 18R. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR SAID THAT THE CREW WAS BUSY WITH CHKLISTS REGARDING THE ENG OVERHEAT AND WANTED TO STOP THE CLB AT FL280. THIS REQUEST WAS DENIED FOR TFC REASONS. WHEN THE FLT CLBED TO FL310 AT ATC REQUEST; THEY EXPERIENCED THE CABIN PRESSURE LOSS AND THEN MADE THE EMER DSCNT. THE CAPT SAID 'HE WASN'T GOING TO FOOL AROUND WITH THAT SIT' AND DECIDED TO HEAD BACK TO CLT. THE POSTFLT SHOWED THAT THE DUCT TO THE HIGH STAGE COMPRESSOR HAD BLOWN AND SEPARATED FROM THE ENG CASING; CAUSING THE ENG OVERHEAT WARNING. HE SUPPOSED THAT THIS WAS ALSO ASSOCIATED WITH THE LOSS OF CABIN PRESSURE. THE OVERHEAT CLRED WHEN THE THROTTLE WAS PULLED BACK SLIGHTLY. THE ENG WAS NOT SHUT DOWN. THE ACFT WEIGHED 210000 LBS AT LNDG; 12000 LBS OVERWT.