What was found
ON TAKE-OFF FROM ORD, NOTICE MUSTY SOCK SMELL FOR SEVERAL MINUTES. C/W WORKCARD 0550-2001 ISOLATE SMOKE + FUMES IN COCKPIT/CABIN UP TO STEP#4. FOUND HYDRALIC LEAK ON RT SIDE OF THE WING TO THE BODY FAIRING. REMOVED PANEL 192BB AND FOUND SLAT ANGLE GEARBOX LEAKING ON TOP THE PACKS DUCTS. CLEANED THE AREA + PACK DUCTS. REMOVED SLAT ANGLE GEARBOX IAW A220 AMP 27-81-40. (R.PEREIRA 916552). PERFORMED OPEN AREA INSPECTION. NO DEFECTS FOUND ATTACH HARDWARE AND COMPONNENTS IN GOOD CONDITION. OK TO INSTALL REPLACEMENT GEARBOX (QC5237). RPLCD GEARBOX PER A220 AMP 27-81. OPS CHK OK (352137). VERIFIED INSTALATION OF REPLACEMENT GEARBOX. ALSO VERIFIED OPERATIONAL CHK. ALL RII COMPONENTS SATISFIED (QC5197) (508846) PER NO GO ODI PREV PROGRAM C/W WORKCARD 0550-2001. OPS CHK GOOD. NO NOTICIBLE ODOR IS IDENTIFIED AT THIS TIME. (LP# 4441151)