Flt Guidance Modes

The FMGS guides the aircraft to the target values of Speed, Heading, Altitude etc, using the guidance mode selected by the flight drew. The mode enraged is displayed in the FMA of the PFD.

Lateral :

SRS

Takeoff and go-around speed on elevator control law

CLB

Managed Climb mode, following MCDU target speeds and constraints

DES

Managed Descent mode, following MCDU target speeds and constraints

OP CLB

Selected Climb mode, following FCU target speed

OP DES

Selected Descent mode, following FCU target speed

EXP CLB

Expedite Climb mode

EXP DES

Expedite Descent mode

V/S

Vertical speed mode when in FCU selected in HDG V/S mode

FPA

Flight Path Angle mode when in FCU selected in TRK FPA mode

ALT *

Altitude capture

ALT

Altitude hold

ALT CST *

Constraint altitude capture

ALT CST

Constraint altitude hold

ALT CRZ

Altitude hold at cruise altitude

G/S *

Glide slope capture

G/S

Glide slope

FLARE

Flare

RWY

Ground roll runway track mode

RWY TRK

Airborne runway track hold

NAV

Navigation mode, following the flight plan route from the MCDU

HDG

Selected FCU Heading mode, when in FCU selected in HDG V/S mode

TRK

Selected FCU Track mode, when in FCU selected in TRK FPA mode

APP NAV

Approach Nav mode for non precision approaches

LOC *

Localizer capture

LOC

Localizer mode

GA TRK

go-around track mode

Combined :

LAND

Auto land mode under 400 ft

FINAL

Non precision landing

ROLL OUT

Landing roll out mode

Auto thrust

SPEED

IAS speed mode using either FCU speed or managed MCDU speed

MACH

Mach mode using either FCU Mach or managed MCDU Mach

THRUST

N1/EPR thrust climb limit

RETARD

Idle at touchdown in auto land

Vertical

Managed Modes

Selected Modes

AP/FD modes and the A/T modes

When the AP or F/D engage in certain vertical modes, the FMGS will automatically engage the Auto Thrust into an associated mode as follows :

AP F/D mode	A/T mode
V/S or FPA ALT * , ALT, ALT CRZ, ALT CST G/S * , G/S FINAL, FINAL APP DES (Off path)	SPEED / MACH
CLB/OP CLB DES ( On path) , OP DES EXP CLB , EXP DES SRS	THRUST / IDLE
FLARE,	RETARD

The flight crew may engage a selected mode at any time by pulling the corresponding FCU knob.

The managed modes are engaged automatically after take off, if they had been previously armed. In general managed modes are armed by pushing on the appropriate FCU knob.