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Old 13th August 2011 | 23:56
  #17 (permalink)  
nitpicker330
 
Joined: Jun 2009
Posts: 2,167
Likes: 2
From: Australia
All very well but if the actual IR position is updated by the GPS in flight then why
1/ require a IRS performance check post flight
2/ why do I always see residual groudspeed and position error from the 3 IRS's
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