As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS FLICKER IN FLIGHT. SUSPECT DOOR 1L SWITCH INTERMITTENT. CHECKED EMERGENCY LIGHTS SWITCH AT DOOR 1L, NO FAULT NOTED. UNABLE TO DUPLICATE THE PROBLEM. REVIEWED WORK HISTORY, REPLACED BATTERY PACK FOR ROW 22 - 26R M6006 AS PRECAUTIONARY. ACCOMPLISHED EMERGENCY LIGHTS OPERATIONAL TEST IAW MM33-51-00, TEST PASSED.