What was found
AIR TURNBACK, MALFUNCTION, DURING CLIMB AT 14000 FT A/P DISCONNECTS AND F/D MALFUNCTIONS CAME AGAIN. FD BOTH ON 2 WAS SELECTED AND SWITCHED TO DFGS NR 2 AND MALF, COME AGAIN, AT 2900 FT BOTH FMA S GOES BLANK AND A/P AND ALT FUNCTION WERE LOST. DURING APP WINDSHEAR INOP ANNUN WERE ON, ON THE EOAP. IAW WDM 34-22-11/506 SH 3-4 THE EFIS SYSTEM WIRING WAS CHECKED BETWEEN THE F/O PFD AND SYMBOL GENERATOR 2 AND WAS FOUND IN GOOD CONDITION. IAW WDM 34-24-02/566 THE LINE 2F302T24NB IN TB G30-18 WAS FOUND BROKEN AND IT WAS REPAIRED. IAW AMM 22-01-05/210 THE RETURN TO SERVICE TEST WAS ACCOMPLISHED SATISFACTORY. (S)