PPRuNe Forums - View Single Post - 747-400 APU section
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Old 15th August 2007 | 09:46
  #3 (permalink)  
rmm
 
Joined: May 2002
Posts: 256
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From: BNE
APU section is not pressurised so the metal skin does not need to be thick, and is hard to put counter sunk flush rivets into a thin skin.
Think the same goes for the 767 as well.
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