As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLEED 2 LEAK EICAS MESSAGE. TROUBLESHOT IAW FIM 36-20-00-810-802-A TO BLOCK 9. FOUND BLOWN OUT BLEED SLEEVE FROM PACK 2 VALVE TO HEAT EXCHANGER. REPLACED THE SLEEVE COUPLING AND CLAMPS AS REQUIRED. OPERATED THE PACK NR 2, NO DEFECTS NOTED. OK FOR SERVICE.