As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON DESCENT FROM 25000 FT WITH THRUST LEVERS AT IDLE, ACFT BEGAN DEPRESSURIZING WITH A RATE 3500 FPM. ACFT RE-PRESSURIZES WITH THRUST LEVERS SET APPROXIMATELY 45 PERCENT N1 AND GREATER. MAINTENANCE R & R LT AND RT PACK PRSOVS 3215622-1, 3215622-2