As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. SEAT MOUNTED ESCAPE PATH LIGHTS IN MID CABIN, L2/R2 DOOR EMERGENCY EXIT LIGHTS AND OVERHEAD BIN LIGHTS FAILED TEST. REMOVED AND REPLACED BATTERY ASSEMBLY M733 AND BATTERY PACK M10952 (AALA20170223019) IAW AMM 33-51-11. OPERATIONAL CHECK GOOD.