haseen 5 Posted January 28, 2022 Share Posted January 28, 2022 I use Aerosoft Twin Otter Ext. in p3d v4. It works fine. I am thinking to buy it for my msfs 2020. One question. Does the autopilot IAS function work properly i e similar to twin otter ext in p3d? Regards, Haseen Ahmad. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted January 28, 2022 Aerosoft Share Posted January 28, 2022 With IAS you mean Indicated Airspeed? No it does not. There is no Twin Otter 100/300 that has speed control. Link to comment Share on other sites More sharing options...
haseen 5 Posted January 29, 2022 Author Share Posted January 29, 2022 Dear Mathijs: I mean Indicated Air Speed Hold by IAS. During climb and descend, with a trimmed speed set, if I press IAS button with AP engaged, AP maintains the speed by elevator. If I reduce power, AP pitches down to maintain the speed. If I increase power, the AP pitches up to maintain the speed. It happend well in p3d v4. Does it perfectly work in AS Twin Otter in msfs2020? Regards, Haseen Ahmad. Link to comment Share on other sites More sharing options...
MarkHurst 173 Posted January 29, 2022 Share Posted January 29, 2022 2 hours ago, haseen said: I mean Indicated Air Speed Hold by IAS. During climb and descend, with a trimmed speed set, if I press IAS button with AP engaged, AP maintains the speed by elevator. If I reduce power, AP pitches down to maintain the speed. If I increase power, the AP pitches up to maintain the speed. It happend well in p3d v4. Does it perfectly work in AS Twin Otter in msfs2020? The KAP140 doesn't have an IAS hold mode, so no. Link to comment Share on other sites More sharing options...
Muffo 9 Posted January 29, 2022 Share Posted January 29, 2022 2020's Twin otter is different from P3D's Twin otter. At the beggining I had problems with iAs\vs but with two\three flights I solved the problem. Link to comment Share on other sites More sharing options...
Finn 873 Posted January 29, 2022 Share Posted January 29, 2022 Since the MSFS2020 Twin Otter uses the KAP140 Autopilot, there is ni IAS mode. The Collins 913K Autopilot Controller is only used as a repeater for the KAP140 and thus the IAS button is INOP. Link to comment Share on other sites More sharing options...
Jan R. Storelvmo 67 Posted January 30, 2022 Share Posted January 30, 2022 IAS mode on the AP is used during climb (can also be used for descent, but not recommended as slightly turbulent air may cause the plane to start chasing the speed by constantly changing pitch. Not comfortable). You set the desired airspeed and the plane will hold this airspeed during climb by changing pitch. In the airlines this is the preferred method as it protects you from stalls. The VS mode does not protect you from stalls and can be potentially dangerous if you don't pay attention. Hence the reason why VS mode is primarily used for descends. Link to comment Share on other sites More sharing options...
haseen 5 Posted January 30, 2022 Author Share Posted January 30, 2022 Will Aerosoft make Collins 913K Autopilot Controller 'IAS button' functional in future? I love it during climb in P3D v4! Link to comment Share on other sites More sharing options...
Jan R. Storelvmo 67 Posted January 30, 2022 Share Posted January 30, 2022 3 hours ago, haseen said: Will Aerosoft make Collins 913K Autopilot Controller 'IAS button' functional in future? I love it during climb in P3D v4! It's certainly a handy thing during climb Link to comment Share on other sites More sharing options...
MarkHurst 173 Posted January 30, 2022 Share Posted January 30, 2022 5 hours ago, haseen said: Will Aerosoft make Collins 913K Autopilot Controller 'IAS button' functional in future? I love it during climb in P3D v4! You could no doubt add some facsimile of the IAS hold function yourself with a Lua program (for which you will need FSUIPC), although I'm not sure you could hook it up to that button on the panel. Link to comment Share on other sites More sharing options...
haseen 5 Posted January 31, 2022 Author Share Posted January 31, 2022 I also find that the autopilot pitch wheel does not work in msfs 2020. But it did in p3d. I really miss this AP pitch wheel and IAS function. I wish if Aerosoft could help these to work! Link to comment Share on other sites More sharing options...
iandavid 0 Posted January 31, 2022 Share Posted January 31, 2022 Well I'm confused. On the updated model if I dial in 110 knots on the Saitek Autopilot instrument and press IAS the plane controls pitch to keep the IAS at 110 knots?? Link to comment Share on other sites More sharing options...
Bearviation 1 Posted January 31, 2022 Share Posted January 31, 2022 I was having issues as well with the IAS mode not working but have opted to use the VS mode in the AP. Does the IAS mode work? I can't get it to for some reason. Link to comment Share on other sites More sharing options...
chinjh 67 Posted February 1, 2022 Share Posted February 1, 2022 10 hours ago, Bearviation said: I was having issues as well with the IAS mode not working but have opted to use the VS mode in the AP. Does the IAS mode work? I can't get it to for some reason. There's no IAS mode in aerosoft's otter as with the real life otter. You either climb with pitch trim and correct power setting or you use Vertical speed climb. Link to comment Share on other sites More sharing options...
Bearviation 1 Posted February 2, 2022 Share Posted February 2, 2022 On 1/31/2022 at 9:07 PM, chinjh said: There's no IAS mode in aerosoft's otter as with the real life otter. You either climb with pitch trim and correct power setting or you use Vertical speed climb. Thank you. I wonder why they even bothered putting it in the manual if it's not going to be implemented. smh Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted February 2, 2022 Aerosoft Share Posted February 2, 2022 Because we believe this topic has been answered we have closed it. If you have any more questions feel free to open a new topic. Link to comment Share on other sites More sharing options...
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