What was found
(AIRCRAFT NOT GROUNDED) OPERATIONAL TEST OF EMERGENCY LIGHT RESULT SHOW EPSL 13WL BATT FAULT / REMOVED AND REPLACED EPSU REF WO528678"
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(AIRCRAFT NOT GROUNDED) OPERATIONAL TEST OF EMERGENCY LIGHT RESULT SHOW EPSL 13WL BATT FAULT / REMOVED AND REPLACED EPSU REF WO528678"