What was found
EMERGENCY LIGHTING: ALL INTERIOR AND EXTERIOR EMERGENCY LIGHTS ARE INOP WITH THE EMER LIGHT SWITCH IN ON. USED APU AND ALLOWED THE EMERGENCY LIGHT BATTERIES TO CHARGE FOR 60 MINUTES. PERFORMED DISCHARGE OF THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACKS. MONITORED THE EMERGENCY LIGHTING UNTIL THE LIGHTS BEGAN TO FLASH. ALL LIGHTS REMAINED ILLUMINATED LONGER THAN 10 MINUTES. PER CMM 33-50-03 BATTERIES ARE AIRWORTHY. USED APU TO RECHARGE BATTERIES. NO DISCREPANCIES NOTED AT THIS TIME. ALL WORK PERFORMED PER CESSNA 680A TC-FLT-33-1001.