WARNING INDICATIONS
Lower display - Vibration indications.
Vibration tracking is theoretically done in Mils for the LP (N1) rotor and IPS for the HP (N2) rotor.
In order to avoid two different types of unit indication being provided to the crew, the two values are transformed and displayed in cockpit units.
The LP rotor indication is green and pulses above 6 units.
The HP rotor indication is green and pulses above 4.2 units.
If an indication is not available, the corresponding indication is replaced by 2 amber crosses.
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 24
Nov 02
CFM56-5B TRAINING MANUAL
N1 INDICATION PULSES ABOVE 6 UNITS.
N2 INDICATION PULSES ABOVE 4.2 UNITS.
NOTE : IF INDICATION UNAVAILABLE, THE CORRESPONDING INDICATION IS REPLACED BY 2 AMBER CROSSES.
CTC-231-057-00 VIBRATION INDICATIONS
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 25
Nov 02
CFM56-5B TRAINING MANUAL
WARNING INDICATIONS
Lower display - Filter clog indications.
Oil.
The oil filter clog message appears in amber in case of excessive pressure loss (25.5 psid) across the oil main filter.
When the pressure loss in the oil filter drops below 22 psid, the caution disappears.
Fuel.
The fuel filter clog message appears in amber in case of excessive pressure loss (11.5 psid) across the fuel filter.
When the pressure loss in the filter drops below 8.5 psid, the pressure switch is de-energized and the caution goes off.
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 26
Nov 02
CFM56-5B TRAINING MANUAL
MESSASE APPEARS IF PRESSURE LOSS MESSASE APPEARS IF PRESSURE LOSS
ACROSS OIL MAIN FILTER EXCEEDS 25.5 PSID. ACROSS FUEL FILTER EXCEEDS 11.5 PSID.
CTC-231-058-00 FILTER CLOG INDICATIONS
WARNING
INDICATIONS
FAULT DETECTION
& ANNUNCIATION
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION Page 27
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