TBM 930 baro stuck on 29.92

ATC gives me changes to the barometer, but it seems stuck on 29.92, which is standard pressure. If I twist the knob the plane either climbs or reduces altitude , but the gauge stays at 29.92. This might relate to ATC telling me to descend and maintain 16,000 feet when I am at 16,000. The atc message keeps repeating, maybe because the altimeter is off. In addition when I requested flight level change of 4,000 feet to 20 k, ATC responded to hold 16,000 ft and wait for 56,000 feet, Not quite what I asked for.

Are you using any mods? Have you tried with an empty/renamed community folder?

Sounds like you’re changing altitude, not altimeter. Are you sure you aren’t turning the altitude knob? Sorry, had to ask, as that’s what it sounds like.

If that’s not the case, can you try just pressing your altimeter hotkey to confirm that works? I have no problem in the TBM with the altimeter. And yes, if you’re at the altitude they’re giving you and they keep saying you aren’t, it means the altimeter is wrong. Use your hotkey to confirm it’s working. If the dial continue to not work check to confirm no mods are interfering with it.

Also for the second part, requesting a FL change of 4000’ is an increase of 4000’ from your flight plan cruise level altitude, not your present altitude. So if your flight plan cruise level is say FL310, requesting an increase of 4000 will give FL350, even if presently at 16K. If you do that repeatedly it keeps stacking up, likely why you got to FL560.

But yeah if you keep having altimeter troubles use the hotkey which will auto set it to the correct reading.

Cheers

Hi there,
I changed your title slightly so that people know what the issue is before clicking.
It might help to include a screenshot with the knob you are turning circled.

By hotkey I assume you mean keyboard command. I just went through 2 of the keyboard command lists and found nothing about the barometer or the altimeter. What hokey are you referencing?

Thanks

Hitting the “B” key in flight sets your barometer.

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My question is are you in standard baro mode which automatically sets the barometric pressure to 29.92? You would have to push the baro knob to go back to current/actual baro mode so you can set it to the correct setting under the transition altitude.

If you search for barometric pressure there is an option to assign a hotkey to set baro, which upon pressing it will set the altimeter to the current correct value, whether it’s standard or a different value. Whatever it sets will be the correct reading when pressed. I believe default is B.

Cheers

I just tried what I thought might be it, but it doesn’t matter if you push it or not. It doesn’t lock it as I thought it may. It changes for me.

Thanks. Found B in a UTUBE video. The knob not working is either a bug or a conflict with an addon. Thanks for the help.

I think I found the problem with FL. I wasn’t entering an altitude for a waypoint while entering the flight plan in the G3000, so it was using the altitude you suggested. What I don’t understand is setting the speed in FLC and having it activate. So if I have altitudes set for each of several waypoints is there a way to have the TBM change altitudes at each way point automatically?

Thanks for the help.

I have noted that if you choose preset weather and set wind to zero you get stuck at 29.92.

I usually use live weather and hitting the B key on the keyboard changes the altimeter.

Yes this is intentional as 29.92 standard is generally speaking the altimeter reading for “perfect” conditions as I understand it. So even below transition level, on a clear and calm day the baro can still be 29.92 even while low altitude.

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No - VNAV (vertical navigation) is not yet modeled in the g3000, though it will be in the future.

You can use the AP to automatically climb or descend to a set altitude, however. I would recommend using FLC mode for climbing and VS mode for descending. The aircraft will then level off at your designated altitude.

For FLC mode, set your intended higher altitude, then press FLC, then set your desired climb speed and the aircraft will climb. In the TBM, I use 124 kts up to about 8,000, 175 kts up to about 19,000, and 185 kts up to about 30,000 (keeps the pressurization within acceptable parameters).

For VS mode, set your intended lower altitude, then press VS, then dial in your descent rate and the aircraft will descend. I normally set 1,500 fpm and maintain around 230 kts.

It’s more an average then perfect. International Standard Atmosphere - Wikipedia

Good answer. But I have been trying to figure out how to set climb speed, and have not do so yet. Thanks again for the clear answer.

I don’t have time to go into the cockpit right now and do a close-up, but here is a panel view that may help. On the right side of the AP panel there is a vertical dial used to set climb and descent - in FLC mode it will change the speed setting. In VS mode it will change the rate of climb/descent in fps. Note the area I have marked at the upper part of the PFD - this is where your settings for speed/rate-of-change will appear when you rotate the dial.
Imgur

Got it. Thanks for the response.

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