What was found
CABIN EMERG LIGHT: EMERGENCY LIGHTING ABOVE SEAT 10 ACROSS FROM MAIN ENTRY DOOR DOES NOT ILLUMINATE DURING TEST. RAN APU DURING PREFLIGHT CHECKED LIGHT AGAIN AFTER APU WAS SHUT DOWN. IT ILLUMINATED. THEN AFTER CHECKING OIL COMPLETED TEST AGAIN TO CONFIRM AND THE LIGHT WOULD NOT ILLUMINATE. // SIGNOFF // TC-FLT-33-1001 (CESSNA 680 / 680A/ 700 I EMBRAER EMERGENCY LIGHTING POWER SUPPLY BATTERY EXERCISE PROCEDURE)