What was found
AFTER DEPARTURE, WITH FLAPS 15/20, DURING RETRACTION, FLAP SYS 1 & SYS 2 FAULTED. FLAP HANDLE CYCLED, FLAP STUCK AT 15/20, IAW ECAM GPWS SWITCH TO OVERIDE. IAW QRH FLAP HANDLE SELECTED TO 30/40 FLAP WENT TO 30/40 FAULT LIGHTS EXTINGUISHED. AFTER LANDING FLAPS RETRACTED NORMALLY. INSPECTION FOUND LT & NR 2 FLAP SCREW JACK OIL CONTAMINATED. R & R NR 2 FLAP SCREW JACK IAW AMM27-54-22-04. ADJUSTED IAW AMM27-54-22-0 4 & PERFORMED TRACK FAIRING OPERATING RODS ADJUSTMENT IAW AMM27-50-21-04. FULLY EXTENDED & RETRACTED THE FLAPS IAW AMM27-50-00-3 FOR SEVERAL TIMES, CHECKED NORMAL. PERFORMED THE ENG RUN & OPERATED THE FLAPS FOR FULL RANGE 3 IAW AMM27-50-00-3, ALL NORMAL.