As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN RIGHT SIDE EMERGENCY LIGHTS FWD OF OVERWING EXITS AND OUTSIDE R/H LOWER GROUND EMERGENCY LIGHT ONLY STAYED ON FOR < 2 MINUTES BEFORE GOING OUT. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK POWER SUPPLY S/N 47234 AND OPS CHECKED GOOD IAW B737-800 AMM 33-51-06-960-804 AND RESEATED OUTSIDE R/H LOWER GROUND EMERGENCY LIGHT BULB IAW B737-800 AMM 33-51-04-960-801.