Slew Mode PMDG B737

[agk]

Hi J-P,
since I didnt get any response to my emails I'll try it here:

slew mode on the PMDG B737 does not respect the course of the flight plan.

I am always placed south of the desired slew waypoint with a heading of 359 deg.
In addition the distance to the slew WP is always app. 20 NM, still a long way to go

regards,
- Andy

[jpgarraio]

Hi Andy,

Thank you for your post, I was very busy working on the AVRO RJ.
I will check that tomorrow, I could reduce slightly the distance but the idea is still to be away to get some time to prepare.
for the course 350, I will check and report back.

Cheers,

J-P

[jpgarraio]

Ok, I just tried and I do not get any issue with the heading.
Could you make a video of the event?

Cheers,

J-P

[jpgarraio]

See here my last test:
https://youtu.be/n4_UA-oyO5E

Cheers,

J-P

[agk]

Hi J-P,

thanks for your video. I'll try the same flight later.

In the meantime I was preparing some screenshots for you on a short flight from LZH to LSGG.
However this time (newest Fsipanel update) I wasn't even able to slew, I got the message "error with this waypoint", ...

This lets me think that the Airac Cycle might somehow be related to this strange behaviour on my side.
I terminated my Navigraph Subscription end of summer this year leaving everything installed as it was.
Planning in SimBrief, loading in FS2020 etc. all works fine.

Hope this new slew feature is not in any way dependant on an active Navigraph Subscription.

thanks for your effort,
regards,
- Andy

[agk]

Hi J-P,

now I managed to reproduce the wrong course issue again.
At my last attempt I skipped setting the destination Airport and Rwy in Fsipanel assuming that it wouldn't
be necessary since you are reading the actual flightplan from the FMC, but that doesn't seem to be the case.

Anyways, I provide a zip file with all the relevant flight data (B737 snapshot, screenshots, flightplan).
Flight goes from LSZH to LSGG, as soon as I was stable at CRZ altitude of 14000ft I started the slew
procedure as you described, selecting a destination WP of ESEVA also at altitude 14000ft.

I was placed south of ESEVA with a heading of 358 deg. Thats exactly what i always encounter, no matter where
I fly and whats the flightplan course: I'm always placed south of the slew WP heading north.

Maybe you could give it a try with my provided flightplan. I'll go ahead and try to replicate your youtube test flight.

regards,
- Andy

[agk]

Hi J-P,

now I tried to slew on the same flight as you (LSGG to GCTS) at FL350 (see attached files)

a) slew to Canis (like you did), same result: placed south
2nd attempt:
b) slew to Rusik (the WP before Canis), again, placed south

I'm running a PMDG B737-600 (3.0.106) and using (outdated) Airac Cycle 2407

regards,
- Andy

[agk]

Hi J-P,

any news on the slew issue?
I provided all info you requested one week ago.
btw. Updating to the current Airac Cycle didn't help.

When you look at my screenshot you will see that the (erroneous) waypoint prior to the slew waypoint is called
"dtobase". Assuming this is related to the notion of "data transfer object" and therefore might
have something to do with the exchange of information between the sim and fsipanel.

Maybe you pick up some "strange" data from this dtobase object/waypoint?

regards,
- Andy

[jpgarraio]

Hi Andy,

Sorry was busy looking at MSFS 2024 for a compatible version.
I'm unable to reproduce this bug, all my positionings are correct and did not get any other report from other users.
Not sure what is happening there. So issue is the heading to the point only ? Are you 30 NM from the point?

Could you make a screenshot of your FMC with the point you want to move next time? You can see on the line above the "TRACK TO" the waypoint, this is what FSiPanel is reading.

Regards,

J-P

[agk]

Hi J-P,

being the only one with this problem? that's strange, indeed.
Here one final attempt to show what's going on (see screenshots)

1. near TUPOX trying to set BAZAS as the destination WP, with MAMIS being
the WP immediately before the destination WP. Course should be 226 deg

2. placing BAZAS on top of FO legs page without executing, course still correct

3. some seconds later BAZAS is accepted as the destination WP, 19 NM to go,
but with the WRONG course of 001 (!) coming from the south

4. map display shows we are not coming from MAMIS but from that strange DTOBASE

ok, I can't provide more info
would have been a nice feature

regards,
- Andy