A320-Q1-Flap Lever
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Joined: Apr 2014
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From: Wish to live near Poles
A320-Q1-Flap Lever
Its stated that " When Flap lever is in any other position than zero in flight , Idle rpm is increased (Approach Idle) and continuous ignition is activated "
Can anybody explain what exactly Airbus is doing here ? and why doing so ?
Can anybody explain what exactly Airbus is doing here ? and why doing so ?
Joined: Feb 2000
Posts: 4,706
Likes: 590
From: 500 miles from Chaikhosi, Yogistan
Be aware that your book is talking about IAE engines re the ignition. CFMs don't come on with flap.
Re APPR IDLE there is a certificated minimum time that the engine must achieve TOGA power during an approach. I think it's 6 seconds.
From THR IDLE (min power) which is desirable on descent to TOGA would be greater than six seconds, so they need to bump the idle up a bit when landing.
Re APPR IDLE there is a certificated minimum time that the engine must achieve TOGA power during an approach. I think it's 6 seconds.
From THR IDLE (min power) which is desirable on descent to TOGA would be greater than six seconds, so they need to bump the idle up a bit when landing.
Joined: May 2006
Posts: 911
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From: FL510
And before you ask why ignition doesn't come on with CFM engines, that is because CFM is convinced that the FADEC will discover an impending rollback due flameout fast enough to bring on ignition in time to recover.
Thank you All
