NORMAL OPERATIONS
START
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
The thrust levers must be confirmed at "idle" before engine-start. If the thrust levers are not at "idle", the thrust increases above idle after engine-start, and can result in a hazardous situation. However, an ENG START FAULT ECAM warning triggers, to indicate that the flight crew must set the thrust levers to "idle".
The engines are started in sequence, preferably engine 2 first, in order to pressurize yellow hydraulic system, which supplies the parking brake accumulator.
When the ENG START selector is set to "START", the FADECs are electrically-supplied. When there is sufficient BLEED PRESS, the PF begins the start sequence by setting the ENG MASTER switch to ON. The flight crew should monitor the start sequence:
‐ Start valve opens
‐ N2 increases
‐ IGN A(B)
‐ Fuel flow
‐ EGT
‐ N1
‐ Oil pressure increases
‐ Start valve closes
‐ IGN indication off (Refer to FCOM/PRO-NOR-SOP-08 AUTOMATIC ENGINE START)
When the engine is at idle, or when AVAIL is displayed, the PF can start engine 1.
The flight crew should check the relative engine vibration level.
When the ENG START selector is set to NORM, the packs return to the OPEN position. APU Bleed should immediately be turned off, to avoid engine ingestion of exhaust gas.
If the start is not successful, the flight crew must use the ECAM as usually done, and avoid instinctively selecting the ENG MASTER switch to OFF. This would interrupt the FADEC protective actions (e. g. cranking after hot start).
AVERAGE IDLE ENGINE PARAMETERS
Criteria: CFMI
3 Applicable to: MSN 1668-4078
As soon as the engine-start is complete, the flight crew should check the stabilized parameters. At ISA sea level:
N1 about 19.5 %
N2 about 58.5 % EGT about 390 °C FF about 275 kg/h- 600 lb/h
NORMAL OPERATIONS
START
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
AVERAGE IDLE ENGINE PARAMETERS
Criteria: IAE
4 Applicable to: MSN 0045-0499
As soon as the engine-start is complete, the flight crew should check the stabilized parameters. At ISA sea level:
EPR about 1.01
N1 about 23.8 %
N2 about 57.7 % EGT about 385 °C FF about 330 kg/h - 730 lb/h
ENGINE START MALFUNCTION
Applicable to: ALL
Following an aborted engine start, the crew will consider an engine dry cranking prior resuming a new engine start attempt. Starter limitations in FCOM, Refer to FCOM/LIM-70 STARTER, must be observed.
MANUAL ENGINE START
Applicable to: ALL
The flight crew should only perform a manual start if:
? The EGT margins are low
? The residual EGT is high
? A dry crank is performed.
It may be appropriate to perform a manual start in high altitude operations, or after an aborted engine start.
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