235.Which Centralized Fault Display System functions are available in flight ?

426.AC ESS BUS is normally supplied by the :

425.The static inverter operates

424.Where is the PTP located ?

423.What are the type A DEUs connected to ?

422.Where are the coding switches located ?

421.If the self-test of director 1 fails:

420.What happens if the DC essential bus fails ?

419.In normal operation director 1 is supplied by:

418.The Area Call Panel ( ) is connected to:

417.A break in one top line data bus: