What was found
SMOKE & HAZE ACCUMULATED IN THE CABIN FROM ROW 10 TO THE REAR OF THE ACFT. CRUISE ALTITUDE WAS 33000. FLIGHT TIME WAS 45 MIN INTO THE FLIGHT. IN CONJUNCTION WITH SMOKE & HAZE, FLIGHT ATTENDANTS REPORTED A STRONG BURNING SMELL, POSSIBLY AN OILY SMELL. PERFORMED CABIN ODOR & SMOKE TASK CARD 21-059-002. FOUND RT PRESS REGULATOR VLV NOT REGULATING & RT ACM SEIZED. R & R RT PRESS REGULATOR VLV IAW MM 21-31-01. R & R RT ACM IAW MM 21-51-01. PACK BURNOUT TASK CARD 21-059-008 ALSO PERFORMED. LT & RT PACK OPERATIONS & LEAK CHECKED GOOD.