As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK OFF-RIGHT BLEED OFF PROBLEMS. ACCOMPLISH RIGHT PACK LOW LIMIT VALVE TEST PER MM. ACCOMPLISH PACK TEMP CONTROLLER BITE PROCEDURE PER MM. IF NO FAULTS FOUND WITH THE LOW LIMIT VLV OR PACK TEMP CONT BITE, REPLACE THE RIGHT PACK FLOW CONTROL VLV PCN (643-9118) MR21290. ALSO REPLACE THE RIGHT PACK FLOW CONTROL CARD PCN (481-9037) MR21511. CHECK ON ONLINE IPC FOR THE MOST CURRENT EFFECTIVITIES.