FLCH SPD

The Flight Level Change mode (FLCH) pitches the aircraft to maintain the selected speed in the MCP speed window.

Use your scroll wheel over the altitude knob to increase or decrease the selected altitude in the MCP ALT window

Click the FLCH button to engage the FLCH SPD mode

Mouse over the SPD select knob to change the target speed value in the MCP SPD window if necessary

Note - If you are not using auto throttle you need to either increase or decrease throttle for the climb or descent. The aircraft will not pitch down to gain speed if a higher altitude is selected than the aircraft is currently at. The same is true for the descent, the aircraft will not climb if a lower altitude is selected.

When the selected altitude is reached ALT engages and the selected altitude is captured automatically. Changing the selected altitude at this time has no effect, you need to push FLCH again to fly towards the newly selected altitude again.

飛行級別更改模式(FLCH)可使飛機俯仰，以保持MCP速度窗口中的選定速度。

飛行級別更改模式(FLCH)

使用滾輪在海拔高度旋鈕上增加或減少MCP ALT窗口中的選定高度

單擊FLCH按鈕以進入FLCH SPD模式

如有必要，將鼠標懸停在SPD選擇旋鈕上可更改MCP SPD窗口中的目標速度值

注意 -如果您不使用自動油門，則需要增加或減少油門以用于爬升或下降。如果選擇的高度比飛機當前所處的高度更高，則飛機將不會降低速度以獲得速度。對于下降同樣如此，如果選擇較低的高度，飛機將不會爬升。

當達到選定的高度時，ALT起作用，并自動捕獲選定的高度。此時更改選定的高度無效，您需要再次按下FLCH才能再次飛向新選定的高度。