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Thread: Helicopter crash off the coast of Newfoundland - 18 aboard, March 2009
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Old 16th Feb 2011, 21:41
  #922 (permalink)  
zalt
 
Join Date: Mar 2002
Location: Canada
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Two of those changes were to increase rotor speed from 258 RPM to 271 RPM (>5%) and to increase in main rotor diameter (53.66 ft. to 56.3 ft.).
Jack

Do you know when those changes were introduced into the design?
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