PPRuNe Forums - 737 Anti ice

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Boeing Europe

7th May 2012 14:56

737 Anti ice

Quick Question,

If engine bleed air is selected off , can wing and eng anti ice still be used....??

BUGS/BEARINGS/BOXES

7th May 2012 15:34

Eng TAI yes .
Wing TAI No

Pub User

7th May 2012 15:35

Yes they can.

Engine Anti-ice is tapped off upstream of the bleed valve, and Wing Anti-ice can be fed from the opposite engine.

If both bleed valves are closed, however, then wing anti-ice is not available.

Boeing Europe

7th May 2012 16:57

But if ENG anti ice is tapped upstream on the bleed valve how can is still be used with Bleed valve selected off

Lord Spandex Masher

7th May 2012 17:54

Because its not down stream of the valve!

IFixPlanes

7th May 2012 18:12

Please do not mix upstream and downstream.
http://img839.imageshack.us/img839/844/b737bleed.th.jpg

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