My technique, is to slow down based on simple speed/distance reduction -
As follows -
1 NM for 10 KIAS of excess speed, in horizontal flight.
In example - reduce 340 KIAS to 200 KIAS takes 14 NM.
This technique has worked for me, in 707, 727, 747 and DC8s.
In 737-200 simulators, seems to work well too.
xxx
And my target (approach/landing situation) -
To be 30 NM from touch down, 10,000 feet above airport, at 250 KIAS.
xxx
Due to my reduced mental abilities, I do the
KISS technique.
"
Keep
It
Simple,
Stupid...!" -
xxx
Happy contrails