PPRuNe Forums - View Single Post - B747-400 APU Door Question
Thread: B747-400 APU Door Question
View Single Post
Old 18th April 2007 | 18:37
  #5 (permalink)  
Hotel Mode
Junior trash
25 Anniversary
 
Joined: Nov 1999
Posts: 1,025
Likes: 0
From: UK
My company does it as standard to allow some ambient air to get into the duct and hopefully warm things up from cruise temp.
Hotel Mode is offline  
Reply
0