Copyright D.P. Browne 2011

 

 

 

 

Home.Cockpit.Aircraft Systems.Worked Example.Program Controls.Before Flight.

The flight crew uses the thrust levers to do :

 

Thrust Levers

 

 

Thrust Levers Detents

 

Moving thrust levers whilst A/THR is active

 

Control the engine thrust

Arm and engage the A/THR system

Engage reverse thrust

Engage the Tales off and Go-Around modes of the FMGS

 

Meaning

Mode consequence

TO GA

Maximum take off thrust

Selects SRS mode on the ground, GA mode in the air

FLX / MCT

Max Continuous, or FLX thrust setting if a temperature entry has been made in the MCDU Performance Takeoff page

Selects SRS mode on the ground, GA mode in the air

CL

Maximum Climb thrust

Engages the A/THR after the Take off. This is the normal position of the thrust levers for the A/THR to be active.

IDLE

Idle thrust setting

Disengages the A/THR

MAX REV

Maximum Reverse thrust

Setting the thrust levers above the CL detent

This disengages the A/THR and leaves it in arm mode. The engine thrust is controlled directly by the levers, and MAN THR is displayed in the FMA. If the thrust levers are pushed to the TOGA detent, the  thrust mode changes to TOGA .

Setting the thrust levers below the CL detent

This produces an ECAM warning of “A/THR Limited”. “THR LVR” is shown in green on the FMA and “LVL CLB” flashes in white on the FMA. Note that these effects are disabled in the FMGS Aid, as most commercial joysticks do not have any detents.  .

Setting the thrust levers asymmetrically

This produces the FMA LVR ASYM until both thrust levers are set into the CL detent. This only applies when both engines are operative.

Setting the thrust levers to the idle position

This disengages the A/THR.