What was found
AT APPROXIMATELY 300FT AGL THE FLIGHT CREW RECEIVED THE AURAL WARNING, TOO LOW, FLAPS. BOTH THE FO AND PILOT CONFIRMED FLAPS 25 WAS INDICATED. THE PILOT CALLED FOR A GO-AROUND ANYWAY AND THEY EXECUTED A MISSED APPROACH. THE SECOND APPROACH RESULTED IN A SAFE LANDING. AFTER LANDING, CREW WROTE UP AILERON (RIGHT INNER) HANGING OUT LOWER THAN THE LEFT SIDE AT FLAPS 25. TOO LOW, FLAPS GPWS WARNING DURING APPROACH. MTC REMOVED & REPLACED FSPM M838 LOCATION CARD IAW B767 AMM 27-58-01 NO DEFECTS NOTED A/C RELEASED CAT I. A/C RETURNED TO SERVICE.