Axel-Flo:
As only one example of many perhaps, 300 kts to 10000ft, alt capture, selected speed 250, full spoiler, gear down at 250 kts, thrust idle open descent, maintain selected speed at 250 kts to say🤔 2000ft.......(I haven’t looked at terrain issues but going down while/and slowing down aren’t good bed mates normally) then select 200kts perhaps, decelerate level, speed brakes in, configure, push managed speed and arm the approach? Is it at all in any way possible to achieve with the tracker miles from TOD to say a 6 mile final🤓
What a bizarre way of losing height with limited track miles. For a start, the A320 allows only approximately half speedbrake extension with autopilot engaged (even if the lever is selected to full). If you want full speedbrake extension you must first disconnect the autopilot. Secondly, the most effective method of losing altitude with reduced track miles is to keep the speed high, aircraft clean as long as possible to as low as possible, and then decelerate rapidly in level flight using Speedbrake, Gear and then flaps. So, if terrain, ATC and Company SOP permits the method would be selected MMO/VMO clean to 3000’ (say), activate Approach Phase, Managed speed then Speedbrake, Gear, Flaps. Use selected speed during deceleration according to taste.