Originally Posted by
tdracer
Wing AI is a very high bleed load - on the order of normal EAI and ECS combined. Trying to take all the bleed air from one engine is going to put a huge burden on the bleed system, and can easily result in its own issues.
Thanks, that makes sense. So howcome the Engine Failure and Engine Severe Damage checklists allow you to use WAI through the isolation valve when single engine?
Is it because by definition you’ll have descended to at least drift down altitude when single engine thus reducing the pressure on the remaining bleed system?