B737 NG Decel Point
The Decel Point shown on the ND of B737 NG sometimes just vanishes. In a constant decent approach, I noticed that, depending on the approach type, the Decel point may or may not be on the screen. Although the airplane still slows down as scheduled with no problems, I was wondering if someone could tell me why this happens and what conditions and/or parameters make the Decel point invisible.
Thank you,