What was found
LE FLAP TRANSIT LIGHT REMAINED ILLUMINATED AFTER TAKEOFF, WHEN SELECTED FLAPS 5 TO FLAPS 1. ACFT GROUNDED. EMERGENCY DECLARED. PERFORMED FIM 27-51, TASK 801. RECEIVED FAULT CODE 27-81217 IN HISTORY. IAW FIM 27-88, TASK 806, SENSOR S169 SHOWS FAR WHEN SHOULD BE NEAR. PLACED STEEL NEXT TO SENSOR , STILL FAILED. REMOVED THE FSEU FOR TROUBLESHOOTING IAW AMM 27-51-00. IAW WDM 27-81-11, FIM 27-88 TASK 806. CONFIRMED MESSAGE 27-81217 F1 PROXIMITY EXT. WHILE SHAKING WIRING FSEU DISPLAY OF SENSOR VALUES WERE ERRATIC. FOUND THREE RING TERMINALS TOTAL, NOT SECURED TO STUDS. REMOVED AND REPLACED THE NR 1 S169 L/E FLAP EXT SENSOR. ALL TESTS PASSED.