What was found
UPON DESCENT INTO HHH POWER LEVERS AT FLY IDLE FLT DECK/CABIN STARTED TO FILL WITH SMOKE WITH ENGINE BLEEDS ON. TURNED OFF BLEEDS AND SMOKE STARTED TO DISSIPATE. CONTACTED CONTRACT MX AT 1055 WILL HEAD TO A/C ETA 10 MIN. GOING TO LOOK AT OIL LEVELS AND RUN A/C WITH CREW TO EVAL PROBLEM. OIL LEVELS RIGHT JUST ABOVE 1 QT LEFT 1/3 BELOW MAX LINE, GOING TO RUN A/C. RAN A/C WITH AND WITHOUT BLEEDS, WITH NR 2 ENGINE BLEEDS OFF NO OILY SMELL. GOING TO FERRY TO ROA TO GET SPARE A/C 826. CHECKED BOTH ENGING OIL LEVELS RIGHT 3/4 QT AND LEFT AT 1/3 QT BELOW MAX LINE. RAN A/C WITH CREW CONFIRMED OILY SMOKE IN BLEED SYSTEM WITH ENGINE BLEEDS ON WITH NR 2 ENGINE BLEED OFF, NO OILY SMELL (MECH SHORT SINGED). REPLACED