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Old 23rd Apr 2019, 12:12
  #36 (permalink)  
Bend alot
 
Join Date: Oct 2017
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Posts: 450
Originally Posted by bhunt95 View Post
How about one of those EC-135 built for operation Looking Glass? 17 were built. One or more was constantly in the air 24 hours a day from 1961 to 1990. And in the air or on ground running till 1998.
The two highest contenders with access to some check able data put the flight time to on ground time just in the flight time favour over around 29 years - it is just over 12 hours flying on average in 24 hours for the full 29 years.

But clearly it is possible a aircraft has done more than that, but not many.
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