As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, CABIN FILLED WITH A HAZE THAT REMAINED UNTIL ON FINAL. CONFIRMED SMOKE AND ODOR WAS NOT PRESENT. RAN BOTH PACKS OFF APU BLEED AND RAN BOTH ENGINES WITH PACKS RUNNING COULD NOT DUPLICATE. FOUND RT PACK INOPERATIVE. ACM SEIZED. R & R RT ACM IAW AMM 21- 51. LEAK CHECKED OK.