I am looking forward to the time when 7 years old and 13 yrs old tell me if I am good to go or not.
Until then I stick with what Boeing has tested and tipple check and calculate the
worst case at the time for No Go.
There is no margin except for the built in regulatory and tested.
Something I am quite happy with.
I have taken the 737-800 to the limit may times as per SOP and Manual but never past.
It does perform, with standard margin!
And it will in the N-1 case after V1 at BRS!
Providing YOU perform!
Rather simple stuff , relay.
Lots of rudder until Vr and a rotation rate of no less then 2.5 per second and a V2 climb which gives anything from 400 to 700 feet per minute.
NOT the two engine 2500feet per minute AND acceleration towards V2 plus 15 to 25 kts you are used to!
Not saying the CVR would be something children should listen to uncensored, but it is perfectly safe.
3000 meters are arguably safer , then again we manage to mess that up on occasions , dont we!!
Intersection takeoff with massive Flex or de-rate is the standard , is it not.