What was found
DURING CLIMB TO CRUISE ALTITUDE, ECAM PRESENTED AN ADVISORY PAGE FOR NR 1 ENG NAC TEMP AT 200. SELECTED NR 1 BLEED VALVE OFF AND REDUCED POWER ON NR 1 WITH NO CHANGE IN NR 1 NAC TEMP. AFTER THROTTLE WAS REDUCED TO ALMOST IDLE SETTING, NR 1 NAC TEMP FELL TO 190 DEGREES. THROTTLE REMAINED AT IDLE UNTIL SHORT FINAL APPROACH. DURING DESCENT WITH NR 1 AT IDLE, ADVISORY INDICATION WENT AWAY AFTER 10-15 MINUTES OPEN ENGINE AND INSPECTED DUCTS, VALVES, CLAMPS ETC. FOUND A SMALL CRACK ON FAN AIR VALVE, FOUND A COUPLE OF SENSE LINES TO BE BAD. REMOVED AND REPLACED FAN AIR VALVE, REMOVED AND REPLACED SENSE LINES AND NACELLE TEMP SENSOR. OPS CHECK NORMAL A/C OK FOR SERVICE.