As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. PER EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK TASK CARD STEP B1, B2 FAULT EXIST ATA 33 MAINT MESSAGE 33-11230. REPLACED WIRELESS CONTROLL UNIT 30 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK, PER AMM 33-51-07.