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Old 9th April 2010 | 23:15
  #28 (permalink)  
yotty
 
Joined: Apr 2002
Posts: 274
Likes: 3
From: england
737-3/4/5 engine start 2 first due to the fact that if the isolation valve fails you find out before you waste an engine start. Isolation valve failure is a no-go item.
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