Old 19th Mar 2016, 15:17
  #3 (permalink)  
TypeIV
 
Join Date: Dec 2012
Location: On SBY next to my phone
Posts: 286
@TowerDog, so is a derated thrust rating, which you can do on a contaminated runway.

I think that it has to do with the minimum control speeds which are calculated according to the thrust rating.
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