Systems Guide

Aerosoft
Airbus A320/A321
SYSTEMS
Systems guide
Vol
4
04-03-17
28 October 2014
o ACC ALT is reached
o ALT CSTR is reached with CLB mode armed
 CLB mode can be manually selected by pushing the ALT selector knob.
DISENGAGEMENT CONDITIONS
 NAV mode lost or disengaged
 Selecting another vertical mode
 Setting a lower altitude in FCU than current altitude
GUIDANCE
In standard CLB mode the engine stay at max climb thrust, the speed will be the one calculated by the FMGS and
pitch will vary to keep that speed.
OPEN CLIMB
ENGAGEMENT CONDITIONS
 The aircraft must be in flight more than 5 seconds
 LAND mode is not engaged
 FCU selected altitude is higher than current altitude
OPEN CLIMB is engaged by:
 Pulling the ALT selector knob
 Acceleration altitude reached with armed CLM mode and NAV not engaged
 When an overspeed condition is detected (the aircraft will pitch up to loose speed)
DISENGAGEMENT CONDITIONS
 Selecting any other vertical mode
 Selecting a lower altitude then the current altitude
GUIDANCE
In OPEN CLB the target Speed / Mach is kept by varying the pitch, thrust is managed by the A / THR or manually,
speed target can be selected or managed. All ALT CSTR are ignored in OPEN CLB.
DESCENT
DES mode provides vertical guidance following a computed descent profile between Top of Descent to the
Deceleration point. It uses the data in the F-PLN and the available WIND data. It is divided into three sections:
 Repressurization segment (ignored in our simulation)
 Idle Path segment where the engines are at idle and AP / FD controls SPD
 Geometric path when the AP / FD controls vertical path and the A /THR controls the SPD