As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIV/PRES/DE- TO YUL DUE TO LOSS OF BOTH PACKS WITH CABIN ALTITUDE WARNING AND O2 MASKS DEPLOYED. SECURED RT PACK V-BAND CLAMP TO SEC HEAT EXCHANGER, RESECURED COUPLING AT PACK PRIM HEAT EXCHANGER, R/R HOSES AND CLAMPS FROM ACM TO CONDENSER.