As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) JUST PRIOR TO DESCENT, CREW NOTED CABIN PRESSURE WARNING LIGHT ON. MAXIMUM FLOW ON BLEED FLOW CONTROL SELECTED WHICH CONTROLLED THE CLIMBING CABIN AND RE-PRESSURIZED THE AIRCRAFT. CABIN RECIRC DIVERTER VALVE BOX FOUND CRACKED ALONG THE LOWER AFT CORNER. PART TC: 22,086.