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Thread: Why don't jets fly higher?
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Old 12th July 2000 | 09:16
  #26 (permalink)  
Riverman
 
Joined: Jul 2000
Posts: 6
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From: Canada
Unhappy
Can't find the specs on the Boeing site but I think the B747-SP (early 80's?) wud cruise at FL50. PanAm had a few and maybe South African.
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