Top of descent
How far from the target to start down at YOUR planned rate — no baked-in 3:1 rule: minutes of descent × groundspeed.
CLIMB & DESCENT
TOP OF DESCENT23/32SOLVED
kt
ft
ft
fpm
Reading the screen: cyan is a value you entered, green is a computed result, amber means a field still needs input or the entry needs a CHECK. SOLVED lights when every result is computed; STO keeps a value to reuse in another function; the line-select keys beside the screen pick the field the keypad edits.
How this is computed
How far from the target to start down at YOUR planned rate — no baked-in 3:1 rule: minutes of descent × groundspeed. Coming down 6,000 ft at 500 fpm and 120 kt over the ground means starting 24 nm out. Zero or climbing "descent rates" show an em-dash rather than a bogus distance.
Keyboard shortcuts
- / or Ctrl+K — jump to the function search
- Digits, . or : (outside a field) — type into the scratchpad, then press a ◄ line-select key to insert
- Arrow keys — move around the keypad; Enter opens the focused function
- Home / End — start / end of a keypad row
- Alt+1…8 — jump to a keypad group