Of course you can create even more problems by careless increments of thrust. Although it shouldnt be too much of a problem on a F70 or 100 as this increment is max. 0.15 EPR at normal ambient conditions. (e.g. from 1.57 EPR with flex 54 to 1.70 up to 1.72 EPR which is TOGA thrust.) Its up to the PNF to make this and i hope that we wont have a problem using this procedure.
In the end you want to have the best margins and reserves when flying single engine. Isnt it? Normally, even if you firewall the thrust levers (which is done automatically by Autothrust when you get into a windshear), you dont go into the red instantly. Itīll take some time and thats enough time to adjust the thrust as required.
Leo
Maxrate172:
Flex is the Airbus or Fokker terminology for reduced or derated thrust.
I think that almost every airliner even turboprops have the ability to derate the "Power" required for departure. they just call it something else.
Leo