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Old 28th Jun 2009, 04:10
  #110 (permalink)  
Bullethead
 
Join Date: Nov 1999
Location: East side of OZ
Posts: 615
G'day bobrun,

What would explain that the air became warm and humid all of a sudden?
There's no outside fresh air being blown directly in the flight deck obviously, so would the icing have also affected the packs operation? Could the heat exchangers have taken ice?
I've experienced a marked OAT rise crossing the ITCZ many times, and in clear air occasionally, and sometimes the first indication is a sudden warming and stuffiness in the cabin. I don't believe it is the packs icing up just that they are not capable of the rapid response needed to counter such a quick OAT increase.

Regards,
BH.
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