As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 5497 - STL - ICE PROTECTION ACTIVATED RESULTING IN BLEED 2 LEAK MESSAGE ON THE EICAS. MAINTENANCE PERFORMED AN ENGINE RUN WITH 14TH STAGE BLEED, CHECKED ALL BLEED JOINTS. FOUND NR 16 JOINT IN CARGO FLOOR LEAKING. REMOVED AND REPLACED THE O-RINGS.