Systems Guide

Aerosoft

Airbus A320/A321

SYSTEMS

Systems guide

Vol

04-03-16

28 October 2014

VERTICAL MODES

The vertical guidance modes will make the aircraft change altitude. To leave a FCU selected altitude a dual action

sequence is needed:

 Turn the ALT selector to set the new altitude

 Pull the ALT selector to select OPEN CLB/DES mode or

Push the ALT selector to engage CLB/DES mode or

Select a target V/S and pull the V/S selector knob to engage V/S mode

CLIMB

CLB mode manages the vertical guidance towards the FCU selected altitude taking altitude and speed constraints

into account.

ARMING CONDITIONS

 On ground or when TAKE OFF or GA modea are engaged as long as no other vertical modes are selected.

 In flight when lateral NAV mode is engaged, FCU selected altitude is higher than aircraft altitude or when

aircraft meets a ALT CSTR

DISARMING CONDITIONS

 Engagement of any other vertical mode

 FCU selected mode lower then aircraft altitude

 Switching to DES or APP phase

 Loss of vertical flight path validity or loss of ANV mode

ENGAGEMENT CONDITIONS

 Aircraft more than 5 seconds in flight

 FCU selected altitude above current altitude

 Not in descent or approach mode

 NAV mode engaged

 Not in G/S mode

 CLB mode is automatically selected when