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Thread: Latitude limitations for the use of IRS
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Old 7th May 2019 | 16:11
  #33 (permalink)  
Smythe
 
Joined: Feb 2019
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From: shiny side up
As far as I remember, the 747-400 had an operational limitation which prohibited flight at latitudes exceeding 89 degrees.
Boeing reference in Post #18
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