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Old 9th March 2013 | 09:51
  #1202 (permalink)  
Walnut
 
Joined: Jan 2006
Posts: 270
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From: Cyprus
The APU shut down when its battery failed because it needs an independant pwr supply to fire off its fire bottles if the unit (APU) catches fire. An APU frequently runs unmonitored on the ground.
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