What was found
AIRCRAFT ENGINE RUNNING AND ALTERNATOR SWITCH SELECTED TO (ON) POSITION, ALTERNATOR RED ANNUCIATOR LIGHT (ON) AND LOAD METER SHOWING ZERO LOAD BEING CARRIED BY ALTERANTOR. AC OIL TEMP AND OIL PRESSURE INDICATIONS DROPPED TO ZERO IN FLIGHT AS BATTERY VOLTAGE DROPPED WELL BELOW 24. AC LANDING GEAR AND FLAPS SELECTED TO DOWN POSITION PRIOR TO LANDING, DID NOT OPERATE DUE TO LOW BATTERY VOLTAGE AND ALTERNATOR INOPERATIVE. AC LANDED GEAR UP. FOLLOWED POH PROCEDURES. (SW01200505015) (K)