What was found
DURING ROUTINE MAINTENANCE CHECK, FOUND EMERGENCY LIGHTS ROW 15 THROUGH 20 INOP. REMOVED AND REPLACED POWER SUPPLY AND BATTERY POWER SUPPLY 900542, DISCHARGED AFT CABIN STC - SA3432NM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING ROUTINE MAINTENANCE CHECK, FOUND EMERGENCY LIGHTS ROW 15 THROUGH 20 INOP. REMOVED AND REPLACED POWER SUPPLY AND BATTERY POWER SUPPLY 900542, DISCHARGED AFT CABIN STC - SA3432NM.