14th Performance & Operations Conference Bangkok, 4-8 April 2005
One/two engine taxi
Review of associated recommendations
Presented by:
Michel DOCUS
Group Manager A320 Family
Operational Standards
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 2 14th Performance & Operations Conference Bangkok, 4-8 April 2005
Contents
Introduction
 Why should I perform an “engine out” taxi ?
 Conditions to perform an “engine out” taxi
 F.A.Q. :
Do I need APU ?
Can I perform an “engine out” taxi in icing conditions ?
Can I brake during engine start/shutdown on S.A. ?
Can I perform the flight control check ?
 Conclusion
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 3 14th Performance & Operations Conference Bangkok, 4-8 April 2005
Introduction
 Taxi time increases due to :
Airport congestion
Increased airport size
 Airport regulations
One Engine Out allowed on Single Aisle and A330
Two Engine Out allowed on A340
 Engine out taxi already covered in FCOM 3.04.90 and “Getting to
grips with fuel economy” brochure
Increased use of one or two engine out taxi
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 4 14th Performance & Operations Conference Bangkok, 4-8 April 2005
Contents
 Introduction
Why should I perform an “engine out” taxi ?
 Conditions to perform an “engine out” taxi
 F.A.Q. :
Do I need APU ?
Can I perform an “engine out” taxi in icing conditions ?
Can I brake during engine start/shutdown on S.A. ?
Can I perform the flight control check ?
 Conclusion
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 5 14th Performance & Operations Conference Bangkok, 4-8 April 2005
Benefits of engine out taxi
 Reduce CO2 emission (Kyoto protocol)
 Save fuel
 Save brakes
 Reduce turn around time
 Airport regulations
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 6 14th Performance & Operations Conference Bangkok, 4-8 April 2005
Benefits of engine out taxi
 Reduce CO2 emission
Kyoto protocol valid since 16 feb 2005
– Reduce CO2 emission to 1990’ level
– 1 ton of burnt fuel = 3.15 tons of CO2
Today no specific regulation edicted by ICAO
　
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