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FCOM 19 AUG 10
THRUST RATING LIMIT
Applicable to: MSN
4566,,,
The FADEC computes the thrust rating limit for each thrust lever position, as shown below.
If the thrust lever is set in a detent, the FADEC selects the rating limit corresponding to this detent.
If the thrust lever is set between two detents, the FADEC selects the rating limit corresponding to the
higher detent.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
THRUST CONTROL SYSTEM (IAE) - THRUST RATING LIMIT
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-70-35-40 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
THRUST CONTROL SYSTEM (IAE) - THRUST CONTROL
A318/A319/A320/A321 FLEET DSC-70-35-50 P 1/4
FCOM 19 AUG 10
MANUAL MODE
Applicable to: MSN
4566,,,
The engines are in the manual mode provided the A/THR function is :
‐ not armed or
‐ armed and not active (thrust lever not in the A/THR operating range and no alpha floor).
In these conditions, each engine is controlled by the position of its thrust lever.
The pilot controls thrust by moving the thrust lever between IDLE and TOGA positions. Each position
of the thrust lever within these limits corresponds to an EPR.
When the thrust lever is in a detent, the corresponding EPR is equal to the EPR rating limit computed
by the FADEC for that engine.
When the thrust lever is in the FLX/MCT detent :
‐ On the ground
The engine runs at the flex takeoff thrust rating if the crew has selected a flex takeoff temperature
on the MCDU that is higher than the current Total Air Temperature (TAT).
Otherwise the engine produces Maximum Continuous Thrust (MCT).
Note: A change in FLEX TEMP during the takeoff has no effect on the thrust.
‐ After takeoff
The pilot can change from FLX to MCT by moving the thrust lever to TOGA or CL, then back to
MCT. After that, he cannot use the FLX rating.
The pilot can always get MAX TO thrust by pushing the thrust lever all the way forward.
Note: Setting the thrust lever out of FLX/MCT detent without reaching TOGA or CL detent has no
effect.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
THRUST CONTROL SYSTEM (IAE) - THRUST CONTROL
A318/A319/A320/A321 FLEET DSC-70-35-50 P 2/4
FCOM 19 AUG 10
AUTOMATIC MODE
Applicable to: MSN
4566,,,
In the autothrust mode (A/THR function active), the FMGC computes the thrust, which is limited to
the value corresponding to the thrust lever position (unless the alpha-floor mode is activated).
INDICATIONS ON FMA
The FADECs monitor the positions of the thrust levers, and trigger appropriate indications on the
FMA.
LVR ASYM : appears in amber (3rd line on the FMA) if, with A/THR active and both engines
running, one thrust lever is set out of the CLB detent.
LVR CLB : flashes white (3rd line on the FMA) if the thrust levers are not in CL position
while the aircraft is above the altitude of thrust reduction with both engines
running.
LVR MCT : flashes white (3rd line on the FMA) if the thrust levers are not in MCT position
after an engine failure (with speed above green dot).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
THRUST CONTROL SYSTEM (IAE) - THRUST CONTROL
A318/A319/A320/A321 FLEET DSC-70-35-50 P 3/4
FCOM 19 AUG 10
THRUST CONTROL
Applicable to: MSN
4566,,,
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
THRUST CONTROL SYSTEM (IAE) - THRUST CONTROL
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-70-35-50 P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
FUEL SYSTEM (CFM) - GENERAL
A318/A319/A320/A321 FLEET DSC-70-40-10 P 1/2
FCOM 19 AUG 10
GENERAL
Applicable to:
, ,
MSN
The fuel system supplies fuel to the combustion chamber at the required flow rate, pressure, and
temperature.
The fuel flows from the tank, via the fuel pump unit and the fuel/oil heat exchanger, to the
Hydromechanical Unit (HMU) and to the fuel nozzles.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
FUEL SYSTEM (CFM) - GENERAL
A318/A319/A320/A321 FLEET DSC-70-40-10 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
FUEL SYSTEM (CFM) - FUEL PUMP UNIT
A318/A319/A320/A321 FLEET DSC-70-40-20 P 1/2
FCOM 19 AUG 10
　
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