As title says, ATC instructed me to climb to 36,000 which the plane physically cant do the decrease alt options in atc need you to reach specified alt first and you cant select your cruising alt as thats been broken for a few updates now i cant even cancel the IFR flight plan as there is no option.
Flight was created in the world map flight planner
This is not a simulator it is a hornby trainset
as it has been updated you can do less and less
2 years ago this issue didn’t exist , atc didn’t lose voices and you could customise cruising altitudes.
Did you set your altitude in the Nav Log?
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yes but that’s been broken for a while now SU11 i think broke that
that’s actually set by default to 29,000 for the pc12
It’s not broken. It works fine for me.
Try this:
When you call it up, place the mouse cursor in front of the first letter , so in front of the 3 in 36000.
Use the “Delete” keyboard key to remove the existing numbers, then enter your own.
I do i even went back after i set it and double checked and it was saying what i wanted, only atc then ignores it and forces max alt , i created a flight plan in little navmap set at 29500 it came up as 29500 in the navlog and then atc completely ignored it seems to always force plane to max alt so not so noticable on airliners …
Weirdly on todays flight it only pushed PC12 to 30,000 ( even though i wanted 29,500 which was in navlog) the 36 yesterday may have been an alt constraint but still un achievable
If you use the “backspace” key, it won’t work, but it works for me using the “Delete” key.
I use it for both modern airliners and smaller prop airliners, right up to the DC-6.
Atc always respects it.
I must admit not having tried mid numbers such as 500’s, as these are not normally used IRL.
I’ll give that a go today and see if that may be the issue.
I’ll let you know how I make out!
yes i’m aware using backspace cancels it its def in and ive used this feature for years, try a number far removed from max alt like 25,000 or 30,000
I’ve used alt’s from 6000 up to 39000 with no issues, but as I mentioned, I’m going to try something like 16500 and see if the “500” takes. I won’t be surprised if I get 17000.
happens to me at all alts here is a screenshot from flight im currently doing you can see on the Garman the alt i put in flight plan then atc convo

I see the 29500 entered in the Garmin for two of the waypoints. Why is 29500 being used? FL180 and above is controlled airspace. Altitudes are requested/assigned in increments of 1,000 ft for separation. This is what is used by MSFS ATC. If your question is about ATC assigning FL030 vs FL295, MSFS ATC can’t assign FL295 no matter what is in the flight plan. If the aircraft cannot fly at 30,000, then the flight plan should specify lower altitudes especially the Cruising Altitude in the NAVLOG.
NO
ATC ignores any flight level set in the flight plan i used 29500 as an off top of head figure the plane can reach 30k but it cant reach 36k which is what it was assigned even though 30k was set as cruising alt and the plane is incapable of reaching 36k
and the navlog is my point whatever i enter in navlog is ignored and it directs me to climb to max alt of plane or higher
I took two flights, each trying to use a “500” foot increment.
One at 7500 and one later at 12500.
The sim took the altitude mentioned above in the Nav Log, and displayed it properly on the Nav Log Altitude Graph after I clicked the graph.
In both cases, ATC (as it should) rounded it off to the next highest thousand foot level, 7500 got me cleared to 8000, and 12500 got me cleared to 13000.
So, as far as I can see, the sim does work correctly.
did you use high level ifr or low level ifr? ive only ever tried high level
These were obviously low level, but I doubt it would make any difference.
I do use high level most of the time, as I’m a tubeliner guy, and the altitude entry in the nav log is always respected, but I’ve never tried asking for 33500.
That wouldn’t be assigned to you IRL.
I have always had the sim ATC clear me to the altitude I’d requested.
When you enter in the Alt in the Nav Log, do you ensure you click on the graph as well?
ok please forget the 500 that was just a figure off top of my head i did say this it wont respect any figure i put in regardless when it asked me to goto 36000 i was aiming for 30 and 30 was listed in the navlog.
Not sure if i click on the graph but once again i have used the navlog countless times over the years and only since Su10 i think it was it stopped working. im not doing another IFR flight for a few days but will try again clicking on the graph and i will video it so you can see what happens if it goes bananas
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Yes, please do.
You might also want to try using Simbrief for your planning.
You set your altitude in that plan, and the whole thing can be imported into MSFS.