What was found
MAIN EXIT SIGN/LIGHT: ALL EMERGENCY LIGHTS FAIL TO COME ON ON PREFLIGHT CHECK WITH EMER LIGHT SWITCH IN ARM OR ON POSITION. *** CORRECTIVE ACTION *** UNABLE TO DUPLICATE FAULT. ALL EMERGENCY LIGHTS ILLUMINATE AS COMMANDED. SUCCESSFULLY PERFORMED THE EMERGENCY BATTERY PACK OPERATIONAL CHECK REF CE-700 AMM 33-50-00. CHARGED EMERGENCY BATTERIES REF CE-700 AMM 33-50-00. MCC NOTIFIED OF FINDINGS AND ELECT TO HAVE ITEM SIGNED OFF. NO FURTHER DEFECTS NOTED AT THIS TIME.