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this number is the FLEX N1, regardless of the thrust lever position between idle and
FLX/MCT.
(4) FLEX temperature
If FLX mode is selected, the flexible takeoff temperature selected through the MCDUs is
displayed in blue.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (CFM)
A318/A319/A320/A321 FLEET DSC-70-90 P 8/24
FCOM 19 AUG 10
(5) EGT indicator
(A) Actual EGT
‐ It is normally green.
‐ It pulses amber above 915 °C, except for high power operation (FLEX TO or thrust
lever above MCT or at MAX REV, or activation of alpha floor).
‐ It pulses amber above 725 °C during start sequence.
‐ It pulses red above 950 °C, and the numerical value becomes red.
(B) Max EGT
The amber index appears at 725 °C during engine start, then at 915 °C.
It is not displayed during takeoff.
(C) Max permissible EGT
The EGT red line is at 950 °C. Display shows red arc from 950 °C to the end of the scale.
(D) EGT exceedance
If the EGT goes over 950 °C, a red mark appears at its maximum value. It disappears
after a new takeoff, or after a maintenance action through the MCDU.
(6) HP rotor speed N2
The numbers are normally green. (During start sequence, they are green on a grey
background).
When N2 is above 105 %, the indication turns red and a red cross appears next to it. When the
N2 value is degraded (if both N2 sensors fail), the last digit is amber and is dashed.
(7) Fuel flow
These numbers are green.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (CFM)
A318/A319/A320/A321 FLEET DSC-70-90 P 9/24
FCOM 19 AUG 10
Note: If the system detects a discrepancy between the N1, N2, EGT and fuel flow values
on the FADEC-DMC bus and the corresponding displayed values, an amber CHECK
appears underneath the affected parameter.
(8) IDLE indication
This legend appears in green when both engines are at idle. It flashes for 10 s, then remains
steady.
Applicable to:
,
,
MSN
(1) LP rotor speed (N1)
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (CFM)
A318/A319/A320/A321 FLEET DSC-70-90 P 10/24
FCOM 19 AUG 10
(A)
Actual N1 : The N1 needle and N1 digital indication are normally in green. They pulse in :
Amber, when the actual N1 ‐ is above the N1 MAX (See E) ;
‐ Red, when the actual N1 is above the N1 RED line (104 %).
When the N1 is degraded (in case both N1 sensors fail), the last digit of the digital
display is dashed in amber.
(B) N1 Command (N1 trend) : The green needle corresponds to the N1 demanded by the
FADEC. In addition, next to the N1 trend needle, a green triangle indicates the tendency
of N1 command. These symbols are displayed when A/THR is active.
(C) Transient N1 : Symbolizes the difference between the N1 command and the actual N1. It
is only displayed when A/THR is active.
(D) N1 TLA (blue circle) : N1 corresponding to the thrust lever position.
(E) Max N1 : The Max N1 amber index is the N1 limit value, corresponding to the full forward
position of the thrust levers.
(F) Max permissible N1 : The N1 redline is represented by a red arc at the end of the scale,
beginning at 104 %.
(G) N1 exceedance : If 104 % is exceeded, a red mark appears and remains at the maximum
value achieved. It will disappear after a new start on ground or after maintenance action
via the MCDU.
(H) 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.
(If unlocked in flight, the indication first flashes for 9 s and then remains steady).
(2) Thrust limit mode
TOGA, FLX, CL, MCT, or MREV limit mode, selected by the position of whichever thrust lever
is farther forward, is displayed in blue.
(3) N1 rating limit
It is computed by the FADEC for the present thrust lever angle, and is displayed in green.
Note: When the aircraft is on ground with the engines running, the N1 rating limit displayed
here corresponds to the TOGA thrust limit, regardless of the thrust lever position.
When the aircraft is on ground with the engines running and FLEX mode is selected,
this number is the FLEX N1, regardless of the thrust lever position between idle and
FLX/MCT.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
CONTROLS AND INDICATORS (CFM)
A318/A319/A320/A321 FLEET DSC-70-90 P 11/24
FCOM 19 AUG 10
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 4(111)
