757/767 Climb Derates?
I wonder if any 757/767 drivers out there could help me with this?
What determines whether you use CLB/CLB1/CLB2 thrust derates. Is there just a "magic" weight below which you can do CLB1 and another (lower) weight below which you can take CLB2?
Also does the derated climb thrust stay in all the way to TOC? I heard that on the 767 at least it slowly "washes out" as the aircraft climbs. Does this also apply to the 757?
Any response would be appreciated. Thanks.