What was found
AC RETURNED OF FLIGHT DUE TO GPWS FAULT AND TAWS AUDIBLE WARNINGS WERE ACTIVATED DURING CLIMB. THE GPWS WAS TESTED IAW MM 34-45-00, ALL CORRECT. AS A PRECAUTIONARY ACTION, THE RADIO ALTIMETER WAS REPLACED AND TESTED IAW MM 34-42-03 AND 34-43-20, ALL CORRECT. THE OVERWEIGHT INSPECTION WAS NOT NECESSARY DUE TO THE LANDING WEIGHT WAS 109,700 POUNDS AND THE MAXIMUM IS 139,500 POUNDS.