What was found
ON SHORT FINAL TO LAND, SMELLED A BURNING SMELL IN COCKPIT & ALARMS IN AFT LAVS WENT OFF. PASSENGERS & FWD FLT ATTENDANT REPORT A HAZE SEEN IN CABIN FROM UNKNOWN SOURCE. FOUND 2 DUCTS BLOWN OUT AND OIL IN ACM. REPAIRED DUCTS AND REPLACED ACM REF AMM 21-20. NEEDS CK OUT. REMOVED APU DOORS & WASHED APU INLET. FOUND 575 DEG THERMOSTAT BLOWN OUT RT SIDE, REPLACED SAME AMM 21-61-07. C/W WORK CARD 7100-2619 PNEU SYS DUCT BURNOUT AND WORK CARD 2170-4139 WATER BAGS REPLACEMENT. NO LEAKS. RAN BOTH ENGS TO CLIMB POWER WITH PACKS OPERATING. NO SMELL.