-
The Air Data and Inertial Reference Unit (ADIRU),
which provides Mach number to the ECU.
-
The Hydraulic system, including the Thrust Reverser
Shut-Off Valve (TRSOV) and the Hydraulic Control
Unit (HCU).
- The C-ducts and blocker doors with their related
actuators and deploy and stow switches.
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ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
INDICATING SYSTEM
Thrust reverser.
When the thrust reverser is selected, indication is available for the crew on the upper ECAM system.
In deploy mode:
-A box with REV appears when reverse is selected.
This box is displayed in the N1 dial indication.
-
The REV indication is displayed in amber colour
when the throttle is in the reverse range and the
blocker doors are not 95% deployed.
-
The REV indication is displayed in green colour when
the doors are fully deployed.
In stow mode:
-
The REV indication is still displayed during the stow
operation.
-
The REV indication is displayed in amber colour
when the doors are restowed.
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ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
EFG THRUST REVERSER CFM56-5B TRAINING MANUAL
Thrust reverser logic.
Based upon the T/R status, the ECU will apply full reverse thrust only if:
- The four doors are detected open. - The engine is running. - The aircraft is on ground.
In transient, idle speed is selected.
The ECU receives signals from aircraft and engine systems, such as the TRA position, flight/ground status and position of the stow and deploy switches. Depending on these inputs, the T/R logic within ECU will either:
- Inhibit the thrust reverser, or. - Allow forward thrust, or. - Allow reverse thrust.
A test is available through the MCDU menus, to check some T/R components. To perform this test, the conditions are:
- Aircraft on ground. - Engine not running.
EFFECTIVITY ALL CFM56-5B ENGINES FOR A319-A320-A321 CFMI PROPRIETARY INFORMATION 78-30-00 ENGINE SYSTEMS Page 10 Jan 03
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EFFECTIVITY ALL CFM56-5B ENGINES FOR A319-A320-A321 CFMI PROPRIETARY INFORMATION CTC-201-234-01
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