Systems Guide

Aerosoft
Airbus A320/A321
SYSTEMS
Systems guide
Vol
4
04-03-9
28 October 2014
the APU is running and bleed air and electrical power are available a green AVAIL will show and the ON will not be
shown. Note the APU needs a 3 minute cool down period after it has shut down.
On the ELEC panel the APU GEN pb will be dark when the APU generator is ON, and when pressed it will show OFF
as the APU generator is taken of line. When there is any problem an amber FAULT will show and the ECAM will
show more information.
On the AIR COND panel the APU BLEED pb will show ON when APU N speed is sufficient. When pushed the pb
will be dark and the bleed air valve will close. When there is any problem an amber FAULT will show and the
ECAM will show more information.
AUTOFLIGHT
OVERVIEW
The following components are used by the pilot to interact with the autoflight system:
 Flight Control Unit (FCU)
 Multifunction Control and Display Units (MCDUs)
 Sidesticks
 Thrust levers
 Primary Flight Display (PFD)
 Navigation Display (ND)
The autoflight system is part of the Flight Management System (FMS). The FMS (including autopilots and
autothrust system) is made up by two Flight Management Guidance Computers (FMGCs) and two Flight
Augmentation Computers (FACs).
 Flight Management provides navigation, performance optimization and display management.
 Flight Guidance provides autopilot commands (sent to the flight control computers), flight director
commands (sent to the PFD) and thrust commands (sent to the autothrust systems).
 Flight Augmentation provides flight envelope calculations, turn coordination and yaw damping.
PILOT INTERFACES
FLIGHT CONTROL UNIT
The FCU is located in the center of the glareshield and four knobs provide control for:
 Airspeed
 Heading (or track) or navigation modes
 Climb or descent modes and/or
 Vertical speed (or flight path angle)
FACs
FMGCs
FMS
FLIGHT MANAGEMENT
FLIGHT GUIDANCE
FLIGHT AUGMENTATION