CTC-231-049-00 N2 INDICATIONS
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 9
Nov 02
CFM56-5B TRAINING MANUAL
WARNING INDICATIONS EGT N1 or N2 overlimit.
This warning appears when there are primary parameter limit exceedances.
The over limit for : - EGT is 950°C.
- N1 is 104%.
- N2 105%.
The master caution comes on and the aural warning (single chime) sounds.
The indication is shown in red and the failure message appears in amber on the upper ECAM display.
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 10
Nov 02
CFM56-5B TRAINING MANUAL
WARNING INDICATIONS
Upper display - Fuel flow indications.
The fuel flow indications are displayed in green.
In case of invalid fuel flow information, the digital indication is replaced by two amber crosses.
This lack of valid data happens when the ECU power is off. This is the case on the ground, five minutes after the last engine shut down.
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 12
Nov 02
CFM56-5B TRAINING MANUAL
CTC-231-051-00 FUEL FLOW INDICATIONS
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 13
Nov 02
CFM56-5B TRAINING MANUAL
WARNING INDICATIONS
Lower display - Fuel used indications.
The fuel used value, computed by the ECU, is displayed in green.
It is reset at the next engine start (Master switch ON) on ground.
It is frozen at its last value at engine shut down until the next engine start.
The two last digits are dashed if the fuel used indication is inaccurate due to a loss of fuel flow information for more than 1 minute.
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