One/two engine taxi 一台/两台发动机滑行(4)

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One/two engine taxi 18 14th Performance & Operations Conference Bangkok, 4-8 April 2005
F.A.Q.
 Can I perform engine out taxi in icing conditions ?
FCOM / AFM :
Engine anti ice must be on
when icing conditions exist
or are anticipated:
– To avoid ice accretion on
nacelle and fan
Engine anti ice operative only on a running engine
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 19 14th Performance & Operations Conference Bangkok, 4-8 April 2005
F.A.Q.
 In icing conditions,non running engine will not necessarily ice :
Icing conditions do not mean necessarily ice accretion
Non running engine less prone to nacelle and fan icing
– Due to absence of fan airflow speed
 But,difficult to assess conditions under which a non running
engine will ice.
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 20 14th Performance & Operations Conference Bangkok, 4-8 April 2005
F.A.Q.
 Consequences if engine out taxi in icing conditions :
Possible delayed takeoff :
– If engine acceleration requested before takeoff
– Due to warm up , up to 5 minutes (depending on engine)
before engine acceleration, on the last started engine
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 21 14th Performance & Operations Conference Bangkok, 4-8 April 2005
F.A.Q.
 Degraded control on slippery taxiway due to :
Use of assymetric engine anti ice increases ground idle thrust
 Conclusion :
Do not delay engine anti-icing, to avoid possible ice ingestion and
engine damage
Engine out taxi not recommended if anticipated ice accretion
(freezing rain,freezing drizzle,freezing fog or heavy snow…)
© AIRBUS 2005 S.A.S. All rights reserved. Confidential and proprietary document.
One/two engine taxi 22 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 23 14th Performance & Operations Conference Bangkok, 4-8 April 2005
F.A.Q.
 On Single Aisle,why does Airbus recommend to not brake
　
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