13.What is used to cool the fan and core compartments ?

648.APU Fuel Supply from

647.With Engine running but Electrical failure

646.TAT probe is heated when

645.Which slats is heated during flight

644.If OAT temp more than 35 degree

643.LAV Flush cycle control by

642.How many water Servicing / draining pannel

641.Potable Water quality indication on

640.Toilet waste tank located in

639.If MLG seal is leaking