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Old 28th Jun 2019, 22:29
  #25 (permalink)  
lucille
 
Join Date: Jun 2001
Location: sierra village
Posts: 275
“6,000 hours of fast low flying in rough conditions”

Are you sure they fly fast? Most survey work is done at slower speeds to get better resolution.
If their operations are 200AGL or less, it may not be nearly as rough as one imagines. The thermals will not have had time to build and accelerate.
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