As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING BASE MAINTENANCE AT TULSA OVERHAUL WORKING MCN CARD NUMBER72C20033012 EMERGENCY LIGHTS ON RIGHT AND LEFT OF CENTER SEAT ROWS 26 TO 40 DO NOT LIGHT UP WITH SWITCH ON. REMOVED AND REPLACED 2 BATTERY PACKS, ONE AT DOOR 3L (M33406) AND ONE AT DOOR 3R (M33401) IAW AMM 33-51-06, OPS CHECKED GOOD IAW AMM 33-51-06