As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS OVER SEAT ROWS 32 AND 36 DEF INOP. SUPPORT TASK NSA EMX NR 00051. REMOVED UNSERVICEABLE BATTERY PACK PN AD-D717-01-100 SN 179187 A T BATTERY SUPPLY M1899 AND INSTALLED SERVICEABLE BATTERY PACK PN AD-D717-01-100 SN 371771 IAW B737-900 AMM 33-51-06. OPS CHECK GOOD.