As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS ON PRE-FLIGHT EMERGENCY LIGHTS WILL NOT TEST. FOUND EMERGENCY LIGHT SWITCH LEFT IN THE ON POSITION. REPLACED BATTERY PACK NR 1,2,3, AND 4, IAW CRJ700 MM 33-50-17. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. SN 1) 85317 2) 85318 3) 85593 4) 85640. (SW21200501047)