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? It is recommended to retain the use of engine 1 during taxi to maintain the green hydraulic system for normal braking.
? Before releasing the parking brake, the yellow electrical pump will be set ON to pressurize the yellow hydraulic circuit (ALT/PARK BRK and NWS) and avoid PTU operation. The crew will check the hydraulic yellow accumulator pressure.
? Slow or tight turns in the direction of the operating engine may not be possible at high gross weights.
? It is not possible for ground personnel to protect the engine against fire, when the aircraft moves away from the ramp.
? The remaining engines should be started with sufficient time for engine warm-up before takeoff.
? Any faults encountered during or after starting the remaining engine may require a return to the gate for maintenance and thus generate a further departure delay.
? Taxi with one engine shut down may require higher thrust than usual. Caution must, therefore, be exercised to avoid excessive jet-blast and the risk of Foreign Object Damage (FOD).
? The use of APU is recommended but the APU bleed should be switched off to avoid ingestion of exhaust gases by the air conditioning system.
? Before ENG2 start,
‐ The yellow is set off to check correct operation of the PTU
‐ APU BLEED is set back to ON for ENG2 bleed start.
MISCELLANEOUS
Applicable to: ALL
STROBE LIGHT
When the STROBE lights are set to AUTO, they come on automatically when the aircraft is airborne. The ON position can be used to turn on the lights on ground for crossing, backtracking or entering a runway.
PACKS
If the takeoff has to be achieved without air bleed fed from the engines for performance reasons, but air conditioning desired, the APU bleed may be used with packs ON, thus maintaining engine performance level and passenger comfort. In case of APU auto shut down during takeoff, the engine
NORMAL OPERATIONS
TAXI
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
thrust is frozen till the thrust is manually reduced. The packs revert to engine bleed which causes an increase of EGT to keep N1/EPR.
If the takeoff is performed with one pack unserviceable, the procedure states to set the failed pack to OFF. The takeoff may be performed with the other pack ON (if performances permit) with TOGA or FLEX thrust, the pack being supplied by the onside bleed. In this asymmetric bleed configuration, the N1 takeoff value is limited to the value corresponding to the bleed ON configuration and takeoff performance must be computed accordingly.
TAXI FLOW PATTERN
Applicable to: ALL
TAXI FLOW PATTERN
NORMAL OPERATIONS
TAKEOFF
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
THRUST SETTING
Criteria: SA
1 Applicable to: MSN 0045-0179, 0247-0314, 0327-0336, 0354-0362, 0396-0469, 0486-4078
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