Hello!

Regarding the Aerosoft Twin Otter, I'm having some issues with the autopilot.
I previously owned the same aircraft for FSX / P3D, and it didn't have the same issues.

The problem is it's difficult to engage climb or decent, and when I've already used the ALT hold mode, I can't deselect it.
Also, the IAS mode doesn't work at all. The button does nothing.
I know there is one autopilot panel straight in front, and one near the radio stacks, and they work together. But neither will work properly.

Is there a way to get IAS to work as intended?

Thank you.

It's a Twin Otter after all, I highly doubt that it would have any sort of IAS hold so I believe it's inop in the sim. 

6 minutes ago, Dave_YVR said:

It's a Twin Otter after all, I highly doubt that it would have any sort of IAS hold so I believe it's inop in the sim. 

It does have IAS, and the versions for FSX / P3D did have a working IAS. And it's in the MSFS version as well.

Just not doing anything. 

24 minutes ago, Republic3D said:

Regarding the Aerosoft Twin Otter, I'm having some issues with the autopilot.
I previously owned the same aircraft for FSX / P3D, and it didn't have the same issues.

The problem is it's difficult to engage climb or decent, and when I've already used the ALT hold mode, I can't deselect it.
Also, the IAS mode doesn't work at all. The button does nothing.
I know there is one autopilot panel straight in front, and one near the radio stacks, and they work together. But neither will work properly.

The IAS mode isn't implemented. The Twin Otter Extended had a fairly faithful implementation of the Collins AP-106 but in the MSFS version the AP-106 panel is a sham, merely slaved to the KAP-140 in an approximate fashion. The KAP-140 is the default MSFS one, which is a partial implementation of the three-axis version. It doesn't have an IAS mode. To deselect the ALT hold you press ALT, which toggles between ALT hold and VS modes. The VS mode isn't fully implemented but works tolerably well. The behaviour of the KAP-140 in ALT and VS modes isn't completely intuitive, particularly the display. There's a manual here. I also recommend watching this video, which describes some of the operations and my efforts to make the AP work better.

55 minutes ago, MarkDH said:

The IAS mode isn't implemented. The Twin Otter Extended had a fairly faithful implementation of the Collins AP-106 but in the MSFS version the AP-106 panel is a sham, merely slaved to the KAP-140 in an approximate fashion. The KAP-140 is the default MSFS one, which is a partial implementation of the three-axis version. It doesn't have an IAS mode. To deselect the ALT hold you press ALT, which toggles between ALT hold and VS modes. The VS mode isn't fully implemented but works tolerably well. The behaviour of the KAP-140 in ALT and VS modes isn't completely intuitive, particularly the display. There's a manual here. I also recommend watching this video, which describes some of the operations and my efforts to make the AP work better.

Thank you for the thorough explanation! Wow, I didn't know they didn't bother to implement a proper autopilot for the MSFS version. That really sucks. 

2 hours ago, Republic3D said:

Thank you for the thorough explanation! Wow, I didn't know they didn't bother to implement a proper autopilot for the MSFS version. That really sucks. 

Sucks, indeed. The idiosyncratic autopilot was one of the things that made the Twin Otter Extended interesting.

3 hours ago, MarkDH said:

Sucks, indeed. The idiosyncratic autopilot was one of the things that made the Twin Otter Extended interesting.

Yes it was such a good addon. I loved it so much I flew it from Norway, across the Atlantic, across Canada and to Victoria where the current Twin Otter 400 is built. 24 legs, real weather. Sometimes I was stranded for days in certain places. It was a great flight sim adventure. 
I was planning on taking this one from Alaska down to southern Chile. But now I don't know. 

7 hours ago, Republic3D said:

Thank you for the thorough explanation! Wow, I didn't know they didn't bother to implement a proper autopilot for the MSFS version. That really sucks. 

Sadly it's just one of the places Aerosoft cut corners on the MSFS version.

17 hours ago, Matchstick said:

Sadly it's just one of the places Aerosoft cut corners on the MSFS version.

It seems so. That really sucks. They even have the autopilot code from the previous Extended version, but they were too lazy or trying to cut cost so they just used the bog standard word not allowed MSFS code. 
I guess that opens up the possibility of an "Extended" for MSFS later. More cash for Aerosoft I guess. 
I heard some rumors that they're working on a new soundset at least. 

3 hours ago, Republic3D said:

It seems so. That really sucks. They even have the autopilot code from the previous Extended version, but they were too lazy or trying to cut cost so they just used the bog standard word not allowed MSFS code. 
I guess that opens up the possibility of an "Extended" for MSFS later. More cash for Aerosoft I guess. 
I heard some rumors that they're working on a new soundset at least. 

Yeah, it's unfortunate that some developers sort of release stuff and really don't implement certain parts properly. Is there a way you can mod the plane or something so it will function better? Or are they like Carenado etc and don't allow mods?