Reduced thrust Takeoff

Question 1

What is the purpose of reduce thrust takeoffs?

Answer 1

Lowers EGT

Extends engine life

Question 2

What is the maximum takeoff thrust reduction?

Answer 2

25% below engine certified rating

Question 3

Under what conditions is reduced thrust takeoff not permitted?

Answer 3

Any braking Issues with aircraft
Any contamination on RWY - slush, snow or ice
Degraded braking action
Windshear conditions reported or anticipated.
Card notes or perf manual state otherwise for that RWY
DDG requires full thrust