What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING CRUISE AT FL 370, LEADING EDGE FLAPS TRANSIT LIGHT ON FORWARD PANEL ILLUMINATED IN ASSOCIATION WITH THE NUMBER 4 TRAILING EDGE FLAP GREEN LIGHT ON LEADING EDGE DEVICES ANNUNCIATOR PANEL OVERHEAD. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT STL. REPLACED F4 RETRACT (AALA202505190290) AND F4 EXTENSION (AALA202505190472) SENSORS. PER AMM 27-88-11. OPERTIONAL CHECKS GOOD.