GTN problems in B55 and C310 ?

[scottb613 1,188]

Hi Folks,

 

RE: Win10 and P3Dv3.1

 

Been trying to use my newly installed GTN units and I'm having some difficulty... Perfect weather for testing some instrument approaches into KMSV today...

 

Just a quick side note on the autopilots - I realize they are simplified versions although I was a bit surprised considering the obvious care and attention to detail spent on the rest of the plane... Honestly - they seem like the weakest link in these otherwise superb packages...

 

So - I installed the GTN's as per the directions provided - they appear in the panel fine and seem to function as advertised... I started off with an RNAV/LPV approach at KMSV 15 using the B55 - it tracked my initial run in it hit my fixes as expected - as I turned final - I selected approach mode and the autopilot showed approach armed - and - it never sequenced to full approach... It tracked my course on final and as I intercepted the glideslope - the plane started down but the autopilot and the indicator on the panel stayed armed... It had a hard time tracking the glide slope with some serious vertical oscillations...

 

I then moved to the C310... Same approach - same symptoms... It appears to be the same autopilot in both planes...

 

So then I decided to check an ILS approach into 15 in the C310... Both GPS set to VLOC and tuned to the verified ILS frequencies... The C310 has a Nav Source switch - I didn't check if the Baron does... When the HSI is selected to NAV1 - there is no needle deflection from the tuned ILS and it will just blow through the localizer intercept as if it's not there... If I select NAV2 - I get needle deflection but that doesn't do the autopilot any good...

 

I flew the same approaches with the A2A C182 (similar autopilot) also with the GTN loaded - all indications proved good and as expected with rock steady glide slope tracking - which to me proves that the GTN will work properly...

 

I'll add the caveat that I could be doing something wrong or something could be mangled on my end - so I was really hoping someone else with these fine planes with the GTN could verify some approaches to prove it's not a problem on my end... I can't seem to get either plane to work with a GPS or ILS approach after the GTN install...

 

NAV1 no needle deflection

 

 

NAV2 needle deflections​

 

Thanks...

 

Regards,

​Scott

[scottb613 1,188]

Hi Folks,

 

RE: C310

 

I think I may have found an issue - I modified the F1GTN.ini file - and now I have needle deflection and it seems to be working in both ILS mode and GPS mode... I changed the "Radios" and swapped the "Link CRS" and ​ "Auto CRS" values... Still some strangeness with the autopilot as soon as I tune the ILS or select an LPV approach - it goes into GS mode and I'm having some issues with selecting altitudes even while in HDG mode... Still testing and haven't looked at the Baron yet...

 

My Changes:

[GTN650.1]
Airplane=4
Radios=0
Autopilot=1
Mouse=1
Link CRS=1
Auto CRS=0
Fuel=1
Sound=1
Invert Mouse Wheel=0
Active Mouse=1
CPU Core=0

Regards,

Scott

 

[scottb613 1,188]

Hi Folks,

 

Still doesn't solve the problem of the autopilot not switching the "Armed" off so you have some indication the glide slope is captured...

 

Regards,

Scott

[n4gix 4,947]

Scott, I'm going to be working on the next iteration of the C310R over the next week or so. I'll take a look at this issue while doing so.

[scottb613 1,188]

Hi Bill,

 

Thanks - no rush - if you need more information or need me to check something - just holl'r...

 

Regards,

Scott