As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 410 AFTER 1 HR OF FLT SMOKE APPEARED IN CABIN WITH FWD AND AFT SMOKE DET SOUNDING. TURNED OFF LT PACK WITH NO IMPROVEMENT. AFTER 2-3 MINS TURNED OFF RT PACK SEEMED TO GET WORSE. DIVERTED TO ABQ. ATL DELTA NORTH FOUND OIL IN LT PACK DUCTING. REPLACED ACM, HEAT EXHANGER, REHEATER AND CONDENSER. CKS GOOD ON EXTENDED ENG RUN.