What was found
FLT 515 EWR-FLL, ON ROTATION, -WARNING LANDING GEAR NOT DOWN- LOST SPEED A-THR, AP DISCONNECT. LOSS OF DATA ON PDF CONDUCTED. AIR RETURN TO EWR, OVERWEIGH LANDING. INTERROGATED PFR. T/S CENTRAL WARNING SYS AMM 31-50-00. NO DEFECTS. PERFORMED AFS/LAND TEST. NO DEFECTS. REPLACED FMGC 1 1CA1& 1CA2 PRECAUTIONARY PER AMM 22-83-34, PERFORMED OVERWEIGHT LANDING CHECK PER AMM 05-51-11. NO DEFECTS.