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down the engine by closing the LP fuel valve. There is a time
delay of about 60 sat ground idle as the engine burns the fuel left
between the LP valve and the nozzles.
(3) FAULT lt 1 (2)
FAULT lt : This amber light comes on, and a caution appears on ECAM, if there is:
‐ an automatic start abort.
‐ a start valve fault.
‐ a disagreement between the HP fuel valve position and its commanded
position.
OVERHEAD PANEL
Applicable to: MSN
4566,
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (IAE)
A318/A319/A320/A321 FLEET DSC-70-95 P 4/28
FCOM 19 AUG 10
(1) MAN START pb sw
ON : The start valve opens if the ENG MODE selector is set to CRANK or IGN/START and
N2 < 15 %.
Both pack valves close during the start sequence.
The blue ON light comes on.
Off : start valve closed unless a start cycle is in progress.
(2) N1 MODE pb sw
ON : ‐ Thrust control reverts from EPR mode to N1 rated mode.
Following an automatic reversion to N1, rated or unrated mode, pressing the
pushbutton switch confirms the mode.
‐ The blue ON light comes on.
Off : If available, EPR mode is selected.
OVERHEAD PANEL
Applicable to: MSN,
(1) MAN START pb sw
ON : The start valve opens if the ENG MODE selector is set to CRANK or IGN/START and
N2 < 10 %.
Both pack valves close during the start sequence.
The blue ON light comes on.
Off : start valve closed unless a start cycle is in progress.
(2) N1 MODE pb sw
ON : ‐ Thrust control reverts from EPR mode to N1 rated mode.
Following an automatic reversion to N1, rated or unrated mode, pressing the
pushbutton switch confirms the mode.
‐ The blue ON light comes on.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (IAE)
A318/A319/A320/A321 FLEET DSC-70-95 P 5/28
FCOM 19 AUG 10
Off : If available, EPR mode is selected.
MAINTENANCE PANEL
Applicable to: MSN
4566,,,
(1) FADEC GND PWR pb sw
ON : FADEC has electrical power on the ground if the ENG FIRE pushbutton is not
released.
ECAM
Applicable to: MSN
4566,,,
GENERAL
The ECAM’s upper E/WD permanently displays the engines’ primary parameters. The ECAM’s
lower SD displays the secondary parameters, either when they are automatically selected by the
system, or manually selected by the flight crew.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (IAE)
A318/A319/A320/A321 FLEET DSC-70-95 P 6/28
FCOM 19 AUG 10
Applicable to: MSN
4566,
PRIMARY PARAMETER
EPR MODE ACTIVE
(1) Engine Pressure Ratio ( EPR)
(A) Actual EPR
The EPR needle and EPR digital indication are in green.
(B) EPR Command (EPR trend)
The green needle corresponds to the EPR demanded by the FADEC. In addition,
next to the EPR command needle, a green triangle indicates the direction of EPR
tendency.
These symbols are displayed when A/THR is active.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (IAE)
A318/A319/A320/A321 FLEET DSC-70-95 P 7/28
FCOM 19 AUG 10
(C) Transient EPR
Symbolizes the difference between the EPR command and the actual EPR. It is only
displayed when A/THR is active.
(D) EPR TLA (blue circle)
EPR corresponding to the thrust lever position.
(E) EPR max
The EPR MAX amber is the EPR limit value corresponding to the full forward
position of the thrust levers.
(F) REV indication
It is displayed in amber, when at least one reverser cowl is unstowed or unlocked.
It becomes green, when the reverser cowls are fully deployed and reverse mode is
selected. (If unlocked in flight, the indication first flashes for 9 s and then remains
steady).
(2) Thrust limit mode
The limit mode (TOGA, FLX, MCT, CL, or MREV), selected by the FADEC is displayed in
green.
(3) EPR rating limit
The EPR rating limit, associated to the thrust limit mode, is displayed in blue.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (IAE)
A318/A319/A320/A321 FLEET DSC-70-95 P 8/28
FCOM 19 AUG 10
In flight (or on ground with engines stopped) :
• The selected mode corresponds to the detent of the most advanced thrust lever
position.
• The rating limit is computed by the FADEC receiving the highest actual EPR value
(except on ground with engines stopped, where it is computed by the FADEC receiving
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 4(117)
