What was found
DFW - DURING OVERNIGHT MAINTENANCE, EMERGENCY LIGHT AT 21D INOPERATIVE. REPLACED LIGHT ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DFW - DURING OVERNIGHT MAINTENANCE, EMERGENCY LIGHT AT 21D INOPERATIVE. REPLACED LIGHT ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)