As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, FL380. LE FLAP TRANSIT LIGHT ILLUMINATED NR 4 LE FLAP OVRHEAD LIGHT ALSO ILLUM. PERFORMED FIM 27-88 TASK 805 PERFORMED VISUAL CHECK OF F4 RETRACT SENSOR NO FAULTS FOUND PER FIM. FOUND TO BE INTERMITENT FAULT. REMOVED AND REPLACED FSEU IAW AMM 27-51-01, OPS CHECK GOOD.