Installed Equipment: Avidyne 550, Aspen 2500 (three panel), S-Tec 60-2 Autopilot
GPSS has never done a full standard rate turn since I've owned this airplane. The adjustment is as far as it can be adjusted and it gets kinda close but not ideal. As a result, every time it overshoots each turn a bit. I’m looking at the S-Tec 3100 autopilot when it becomes available for the Baron which would solve that problem but I don’t think it is worth throwing money at an autopilot that I plan to replace soon.
I just flew a flight plan: 57AZ-CROME-KAVQ-57AZ and GPSS flew it. The autopilot in GPSS will intersect the leg at a 45º angle initially and in the first photo on the iPad you can see it doing that, I activated the autopilot after turning downwind from taking off RWY19 at 57AZ. The autopilot tracked directly to CROME, as it should have after intercepting the course. Notice the 550 shows a magenta line to CROME and a “barber pole” after CROME signifying the next leg.
BUT . . .
Also notice the angle of the flight path on the 550 from 57AZ to CROME to KAVQ and that it is not curved as would be expected with GPSS.
After CROME, the airplane continued straight ahead for a while so I just let it do it’s thing to see what would happen. It made a right 270º turn to re-intercept at CROME and then went merrily along to KAVQ. Notice on the 550, at KAVQ the flight path is curved as would be expected with GPSS and in fact the flight path was curved.
I guess CROME must a “fly over” waypoint where KAVQ is a "fly by” waypoint. Interesting. I don’t know if you can force a fly over to be a fly by waypoint or not.