What was found
ON DEPARTURE, ATS FAILED, BOTH AUTOPILOTS FAILES AND BOTH FLIGHT DIRECTORS FAILED AND WINDSHEAR DET FAIL LIGHT ILLUMINATED. UNABLE TO GET ANY OR ALL BACK. RETURNED TO DEPARTURE. MCDU SCRATCHED MESSAGE 'THRUST LIMIT MISMATCH' ALSO ILLUMINATED. PERFORMED BOTH FCC'S DETAILED RTS FCC-1 FAILED: FCC-1, AIL ACT-LIB, AIL ACT-ROB, ELEV ACT-ROB, ELEV ACT-LIB, EL MOD LVDT-ROB, EL MOD LVDT- LIB, LWR RUD MOD LVDT-A, LWR RUD MOD LVDT-B, LWR RUD ACT. FCC-2 R-T- PASSED REMOVED AND REPLACED BOTH FCC'S AND R-T-S PASSED IAW AMM 22-01-03 -4.