FCTM
Maximum Rate Climb
A maximum rate climb provides both high climb rates and minimum time to cruise altitude. Maximum rate climb can be approximated by using the following:
787-8
• VREF30+140 knots until intercepting 0.82M
787-9, 787-10
• VREF30+140 knots until intercepting 0.84M
Note: The FMC does not provide maximum rate climb speeds.
Maximum Angle Climb
The FMC provides maximum angle climb speeds. Maximum angle climb speed is normally used for obstacle clearance, minimum crossing altitude or to reach a specified altitude in a minimum distance. It varies with gross weight and provides approximately the same climb gradient as flaps up maneuver speed.