What was found
FLT 6426 - MEX-MTY - CABIN CREW REPORTED THAT SLAT AND SIF LIGHT WAS TURN ON AT ANY SELECTION/POSITION FLAP. IT WAS DETECTED A TROUBLE WITH THE SWITCH S1-467. SUCH SWITCH WAS REPLACED IAW MM 27-81-02, TESTS OK. AT RON, MEX 21/22 SEVERAL TESTS WERE PERFORMED, OK. (M)