FlyerTalk Forums - View Single Post - How is cabin temperature set before boarding?
Old Oct 1, 2019 | 4:54 am
  #13  
Boeing77W
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Originally Posted by oliver2002
Lets say that APUs are not really friendly to the environment on the ground, be it noise or pollution:

https://www.heathrow.com/noise/heath...s/ground-noise




https://www.sustainableaviation.co.u...e-Guidance.pdf
I totally agree that the use of the APU is not ideal and the company are not keen on this approach at LHR. However for whatever reason, the PCA provided by HAL at T5 is not effective and alternative procedures need to be used.
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