Thread: 787 ECS
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Old 19th Dec 2018, 07:00
  #3 (permalink)  
Station Zero
Join Date: Sep 2016
Location: Singapore
Posts: 32
The bleed air system on the 787 is the CACs.

The air con system pretty much runs like any other bleed air based pack system. The only thing that does happen is that the electric ram fans (instead of being directly driven by the pack) run on the ground with the packs off to ensure PECS cooling is maintained due to their heat exchangers being located in where they are.
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