58 minutes ago, Boeing_Driver said:

I just tried a short flight. Began on the ground and took off in GPS mode, then immediately switched to HDG mode for the transition to the LOC. After selecting APPR, the AP won't capture the LOC or GS.

Note, this is using the PMS payware GTN.

 

Edit: I just did the exact same flight in the Baron and it worked flawlessly, so its the C414 that has the issue.

I think we're getting into semantics here now - from all I have read, the majority of the problems are with the implementation of the PMS 750. Those who use the TDS version seem to not have the issue. Now whether that is Flysimware's issue or PMS I have no idea.

4 minutes ago, vgbaron said:

I think we're getting into semantics here now - from all I have read, the majority of the problems are with the implementation of the PMS 750. Those who use the TDS version seem to not have the issue. Now whether that is Flysimware's issue or PMS I have no idea.

Agreed.  I don't have the PMS installed in any other aircraft, so I can't be sure whether it is the GPS unit or the C414.

Are there any default planes that can take it so I could test the theory?

2 hours ago, Boeing_Driver said:

Also, the AP works wonderfully and captures an ILS--provided I have not been in GPS mode previously.

This might actually be a GTN 750 issue, and is being investigated.

Al

3 hours ago, Adrian123 said:

Which variant there are 3 of course? last ILS approach I tried was a total mess mess with the GTNxi Garman AP. Rnav was fine. Tried three different aircraft in MSFS and worked fine. One in p3d and worked perfect. So, I don't believe it is me.

The Freeware PMS 750. From other posts and yours it seems like the GTNxi is the problem then.

54 minutes ago, Brownshortz said:

From other posts and yours it seems like the GTNxi is the problem then.

Not so sure, I am flying LPV and ILS approaches with the GTNXi..

ok, FWIW -  just finished a flight from KBUR-KSBP using ILS11 with FRAMS transition.

Using Steve Drabek's all metal livery and PMS50 Premium

Flight altitude was 10K - took off started climb to 10k -using AP and VS  mode and NAV (GPS) mode

Crossed FRAMS at 4000ft , AP turned to course, reduced speed to 90kts and descended to IAF alt of 2400

Just before reaching IAF - switch PMS50 to VLOC - AP showed LOC - enabled APR - AP then showed GS armed

On crossing IAF - GS became active and a/c continued to descend to rwy as expected.

 

So, *FOR ME* - I am able to utilize ILS approach with BOTH the GTNXi 750 and the PMS50

8 minutes ago, vgbaron said:

ust before reaching IAF - switch PMS50 to VLOC

Must be the secret order.

1 hour ago, vgbaron said:

So, *FOR ME* - I am able to utilize ILS approach with BOTH the GTNXi 750 and the PMS50

Can you tell me what version of the PMS 750 you are using?

Mine is version 2.1.28

1 hour ago, Boeing_Driver said:

Can you tell me what version of the PMS 750 you are using?

Mine is version 2.1.28

2.1.21 -   I'll download the latest version and try the same flight again tomorrow.

Aircraft: Cessna 414AW Chancellor Beta 1.6.2

PMSGTN 750 FREE VERSION APPR Issue: I can confirm the PMSGTN 750 FREE VERSION does not capture the LOC and GS.

1. FP = KPOV LMCTG KYNG

2. Tune VOR1 to 110.1 (RWY 14 ILS)

3. Fly at 3000 ft to LMCTG then 2900 approaching LMCTG

4. Click HDG and fly 98 (or so) to LMCTG

5. Set VOR1 to 143 (On GTN click CDI where VLOC is displayed)

6. Click APPR Will not capture ILS or GS.

NOTE: Using the same flight plan and procedure, the SWS RV-14A captures both the LOC and GS perfectly using the PMSGTN 750 free version.

Posted on DISCORD as well

Edited April 22, 20224 yr by flyblueskies

I use the GTNXi 750 in the Chancellor & have had no issues with the avionics during IFR & ILS flights.

T45

PMS GTN 750 2.1.29 now available - 

APGA: captured altitude was not correct.

APGA: option for working with a mechanical altitude selector.

Autopilot page and APGA: fixed some bug in approach mode detection.

Better GSI detection in WTT mode.

For me with the PMS750 I do not get glide slope capture. But I don't get glide slope capture with the PMDG DC6 either. I suspect I have an addon that is causing it. But which?

Just now, jarmstro said:

For me with the PMS750 I do not get glide slope capture. But I don't get glide slope capture with the PMDG DC6 either. I suspect I have an addon that is causing it. But which?

Will it capture LOC if you were in GPS mode previously then switch to VLOC?

5 minutes ago, Boeing_Driver said:

Will it capture LOC if you were in GPS mode previously then switch to VLOC?

No it does not. At some stage I will try with a clean community folder bar the plane and the PMS. As I mentioned I have exactly the same issue with the DC6 so I strongly suspect a conflict with another addon. The GNT750 works fine with other planes such as the JF Arrow however. I wonder if it's the G1000nxi?

Edited April 22, 20224 yr by jarmstro