As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EMERGENCY LIGHTS OPS CHECK FOUND EMERGENCY AISLE LIGHTS OVER SEAT ROWS 25DEF AND 29DEF INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHTS BATTERY PACK AT MID CABIN POSITION BETWEEN SEAT ROWS 25DEF AND 29DEF PER AMM 33-51-06-960-805. OPS TEST GOOD. ALL LIGHTS ON. INSTALLED AND REMOVED ONE MIG51A.