PPRuNe Forums - View Single Post - Explain these 747 condensation patterns?
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Old 30th January 2009 | 11:33
  #6 (permalink)  
lomapaseo
 
Joined: Mar 2002
Posts: 4,569
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From: Florida
Well I really believe that this kind of discussion is more suited for the spotters forum.

I would query the photo details before even touching the question.

With that kind of clarity it probably is below 10k and thus the speed no greater than 250kts
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