[MSFS2024] Beechcraft C90 GTX King Air

no issues with autopilot from my side. i use thrustmaster airbus.

A post was split to a new topic: Beechcraft C90 GTX King Air Malfunction

Did they finally fix this or just put lipstick on the pig?
Meanwhile, the Black Square King Air is amazing.

I fly the C90 GTi/GTx with the Proline 21 in real life. This model is a great representation of the airplane, especially for a stock aircraft. They nailed 85% of the aircraft.

The 3 most glaring misses are:

  • The sim version is at least 20-25 knots slower than the real aircraft

  • In the aircraft, the “Standby Battery” switch underneath the main battery switch turns on the Secondary Flight Display System (SFDS) a.k.a. the standby instrument above the radio remote tuning unit on the panel. It does not turn on the MFD, as it does in the sim. That is what the main battery does and the C90 does not have a standby battery.

  • Practicing engine failures (v1 cuts) in the sim is useless because there is no yaw when you cut the engine. There needs to be more swing /yaw once an engine fails. The aircraft has an appreciable yaw which needs to be identified correctly and addressed.

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It has been 15 years since I last flew the C90GTi, not only the speed is off, the fuel flow is also 50% too high. There shouldn’t be aural tone in case of master caution and master warning if I remember correctly. The autofeather annunciator should only come on above a certain N1.

There are a few things, speed and fuel flow are the main issues that definitely need to be solved. Regarding engine out performance, maybe they tried to simulate rudder boost? Does it performs the same with rudder boost off?

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If you’ve got a source for numbers showing how far off the cruise fuel flow and performance are, it may be worth posting it as a bug report (I’d do it, but I can’t find a good source for performance data), since Asobo might actually pay attention to it there.

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In Career Mode the plane just doesn’t work. FMS does not work correctly, Autopilot does not work at all. Plane is unflyable over a longer period (for me).

I was able to locate a POH for the GTi which is the same as the GTx minus the winglets and slightly different tires. However, they have the same engines ( PT6A-135A).

I posted a bug report. It shows the sim GTx fuel flow at 100 pounds/hour higher per engine (200 pounds/hour higher total) and 35 knots slower than the real aircraft :astonished:

The propeller does not start spinning when Starter is engaged. It does it in real life, after a couple seconds delay, slowly. (There’s enough airflow through the engine on only the starter to rotate the power turbine and thus the propeller, slowly.)
It’s one of the things the pilot looks for to ensure there isn’t a problem with that part of the engine, such as a low oil issue, or sand/debris or other foreign matter in the engine (for specific example: when parked on sandy gravel and being blasted by the plane behind you, blowing sand into the exhausts)

As far as I’ve experienced, all PT6A engines do this.

PT-6 is a free turbine so indeed, the propeller (power section) is not mechanically connected to the compressor section. The airflow from the compressor section is what drives the power turbine, on the starter alone maybe a little, primarily when light-up occurs the propeller starts spooling up.

I don’t get your reference regarding oil or debris. You won’t find out any oil problems during spool up, late in the start cycle issues with oil system might be recognized but this is not related to the power section spooling up, the oil pump is driven by the compressor section, not the power section.

Very unlikely for debris to enter the engine, the PT-6 is a reverse flow design, debris won’t easily make it’s way into the compressor section, nor the power section via the exhaust. In all the years I flew PT-6 powered aircraft it wasn’t something I was overly concerned about.

Even if debris would have entered the power section, it’s not likely you would be able to tell by looking at propeller rotation during engine start. Unless it is a whole truckload of sand :joy:.

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Radio stack not showing up.

I tried this thing career mode and couldn’t get the AP worked

Heard of it once from colleague:
Plane A: King Air 200, engines were shut down.
Plane B: King air, parked behind A, facing opposite direction. Everyone parked on sandy gravel. Plane B did a long start up and let it run for awhile before pulling away full blast.
Plane A upon startup couldn’t get prop rotation, even after fuel introduction. Inspection found gravel throughout the turbine section (a truckload).

Myself, had it on a 1900C, after multiple cycles and fast turns in winter. Cause was determined to be differential cooling of the metals, within manufacture’s tolerances and ground tested servicable.

I’ve never heard of a oil issue, and indeed oil pressure rise is only looked for after fuel introduction on the checklist flow, however I could see a case were if there was no oil in the hub (major leak or major neglect) there would also be no prop rotation prior to fuel introduction.

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I finally got it to work in career mode with medical flight. I entered it int FMS manually again, and nothing. Went to the Runway, same as always nothing, unable to engage AP. I did a complete shutdown on the taxiway, turned off everything trying to reset and the center display was still on even with all power off. I thought that was odd. I restarted from that point, and thought I would try it one more time before giving up for good. This time after restarting, the center FD started displaying all the waypoints as I entered into the FMS and AP worked. Looking forward to trying again after this flight is completed to see if I can replicate getting it to work.

Tried it again, shut everything down on the stand after starting. It worked second time. Kind of a pain, but it is a decent work around so we can finally fly it in career mode. .