As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR LEVEL AND CABIN SIDEWALL EMERGENCY LIGHTS FLICKERING WITH COCKPIT SWITCH IN THE OFF AND F/A SWITCH IN NORMAL WITH ENGINES SHUTDOWN ON APU POWER DURING PASSENGER DEPLANE. R & R EMERGENCY LIGHT BATTERY AND POWER SUPPLY AT POSITION PS4 IAW MM 33-51-00. OPS CHECKED GOOD. OK FOR SERVICE AT THIS TIME.