As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT RT EMERGENCY EXIT LIGHTS WERE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE RT OVERWING EMERGENCY POWER SUPPLY UNIT AND BATTERY IAW AWA TC A1C33302 & R1C33303. OPS CHECKS GOOD. CONFIRMED FAILURE. REMOVED CONNECTOR A3P3, CLEANED WATER DAMAGE FROM UNDER CONNECTOR. REINSTALLED CONNECTOR. REPAIRED AND TESTED IAW CMM 33-51-12 REV 3.