As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L1 EXTERIOR AND R1 INTERIOR EMERGENCY LIGHTS FAIL OPS CHECK DURI NG SERVICE CHECK.REF TO PEMCO NR 14861.0028 REPLACED BATTERY PACK AT M1675 LOCATION IAW B737 AMM 33-51-06-96 0-805. PERFORMED OP CHECK OF EMERGENCY LIGHTS IAW B737 AMM 33-51 -00-710-801. OP CHECK GOOD.