B737Theory - Precooler Pneumatic supply for the bleedair system is branched off from the engine's high-stage compressors with temperatures being ± 340°C from the 5th stage, and ± 580°C from the 9th
B737Theory - Engine loss and possible effect on pneumatic system. The QRH provides information towards the safe handling of shutting down any engine but what effect has that on the bleed users
![Why is the compressed air (from engine compressors) taken from High Pressure (HP) stage instead of Low Pressure (LP) stage? - Aviation Stack Exchange Why is the compressed air (from engine compressors) taken from High Pressure (HP) stage instead of Low Pressure (LP) stage? - Aviation Stack Exchange](https://i.stack.imgur.com/9jYMW.png)
Why is the compressed air (from engine compressors) taken from High Pressure (HP) stage instead of Low Pressure (LP) stage? - Aviation Stack Exchange
![Can fresh air be fed into a passenger aircraft cabin instead of bleeding air through the engines? - Quora Can fresh air be fed into a passenger aircraft cabin instead of bleeding air through the engines? - Quora](https://qph.cf2.quoracdn.net/main-qimg-419f26d8b552a475fc5cf6961fa4048e.webp)
Can fresh air be fed into a passenger aircraft cabin instead of bleeding air through the engines? - Quora
![Aerospace | Free Full-Text | An Available-to-Implement Thermal Facility for Dynamic Bleed Air Test of Aircraft Environmental Control System Aerospace | Free Full-Text | An Available-to-Implement Thermal Facility for Dynamic Bleed Air Test of Aircraft Environmental Control System](https://www.mdpi.com/aerospace/aerospace-09-00584/article_deploy/html/images/aerospace-09-00584-g001.png)
Aerospace | Free Full-Text | An Available-to-Implement Thermal Facility for Dynamic Bleed Air Test of Aircraft Environmental Control System
![The Schematic of the engine concept a) with a bleed air cooling system. | Download Scientific Diagram The Schematic of the engine concept a) with a bleed air cooling system. | Download Scientific Diagram](https://www.researchgate.net/publication/270759537/figure/fig3/AS:295038740385797@1447354125594/The-Schematic-of-the-engine-concept-a-with-a-bleed-air-cooling-system.png)