Guppy you live in a world of internet forums...where the ability to hide, the tempo, perfectly suits your style of banter...in an airport lounge...you can't run away...you would have to sit there and answer the question right in front of the line guys, other pilots...and using the Socratic method...I, you, and everyone else would quickly and positively come to the inevitable conclusion about your aviation knowledge.
This thread is about De Rated departures...your certainly welcome to take the bait and explain to everyone why you would put 200 passengers father down the runway in order to save some money on engine overhauls..
It is not De Rated, it's derate. As in, an alternative thrust rating. Lots of good reasons--better runway performance thru reduced Vmcg, for one. But, you don't understand performance, are not willing to learn; I'll stop here and let you use SEARCH
Well, johns7022,SinglePilotCaptain, ssg, or whatever name you want to go by, do you understand the role Vmcg plays in take-off performance? There is a huge difference between derate and reduced power, I'd suggest doing some searching, first.
Do us all a favor and review the linked thread above...it pretty clearly shows everyone just how ignorant of basic performance and certification you are. I reviewed it, was reminded of a few things from experts and how supercilious you are.
Brian is going to elaborate on Assumed thrust departures
No I ain't because it's not a subject I know anything about. I leave that to the guys who know what they are talking about, such as BOAC, 411A, Old Smokey, galaxy flyer, John Tullamarine, among others.
I'll just call you out on any of your crap that I know to be bullshite.