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-   -   A320 Pneumatic Air question… (https://www.pprune.org/tech-log/662124-a320-pneumatic-air-questiono.html)

Coupe84 23rd October 2024 16:50
A320 Pneumatic Air question…
 
On all the training material I’ve read, the literature says that the Pneumatic System is supplied with high pressure air from Engine, APU, or HP ground for Air Conditioning, hydraulic tank pressure, wing anti-ice, water tank pressure, and engine starting. But isn’t the Engine Anti Ice also bleed air? I’m curious why I never see that listed. Thanks!

Amadis of Gaul 23rd October 2024 17:05
Originally Posted by Coupe84 (Post 11756236)
On all the training material I’ve read, the literature says that the Pneumatic System is supplied with high pressure air from Engine, APU, or HP ground for Air Conditioning, hydraulic tank pressure, wing anti-ice, water tank pressure, and engine starting. But isn’t the Engine Anti Ice also bleed air? I’m curious why I never see that listed. Thanks!
Because it's a separate system, supplied by a different valve.

172_driver 23rd October 2024 21:42
The engine anti-ice is bled before the bleed valves.

BUSSPilot 24th October 2024 07:31
Originally Posted by Coupe84 (Post 11756236)
On all the training material I’ve read, the literature says that the Pneumatic System is supplied with high pressure air from Engine, APU, or HP ground for Air Conditioning, hydraulic tank pressure, wing anti-ice, water tank pressure, and engine starting. But isn’t the Engine Anti Ice also bleed air? I’m curious why I never see that listed. Thanks!
“Each engine has its own anti-ice system, with an independent hot bleed air source. The bleed air is extracted from the High Pressure Compressor to anti-ice the engine air inlet”
The above two sentences are an extract from the FCOM.

I suppose your doubt arises from the fact that wing anti ice is mentioned while, engine anti ice is not. As mentioned by the rest on this thread, it is independent - directly from the engine bleed to the engine nacelle.

Coupe84 24th October 2024 17:09
Originally Posted by BUSSPilot (Post 11756525)
“Each engine has its own anti-ice system, with an independent hot bleed air source. The bleed air is extracted from the High Pressure Compressor to anti-ice the engine air inlet”
The above two sentences are an extract from the FCOM.

I suppose your doubt arises from the fact that wing anti ice is mentioned while, engine anti ice is not. As mentioned by the rest on this thread, it is independent - directly from the engine bleed to the engine nacelle.
Thank you! All good explanations.


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