C152 - "Aircraft System Failure; Engine Malfunction" error

Bug Reporting Hub Aircraft & Systems
, , ,
1

ISSUE DESCRIPTION

Description of the issue: Flying the C152 in MSFS 2024 in Free Flight. Regularly (every 2nd to 3rd flight) encounter “Aircraft System Failure - Engine Malfunction” error mid-flight. The throttle is not on full power or full rich mixture in cruise, the weather conditions are clear with temperature and dewpoint outside of icing conditions, engine status is 100%, fuel is 50%, fuel selector is ‘Both’ and altitude no higher than 3000 MSL in the Mid-Atlantic region. If I let the plane crash, the flight resumes/restores from a point shortly before the crash with odd settings (trim, altitude, attitude, etc.). If I instead follow normal emergency procedures and land (random field or other), there is not a possibility to repair that I have found, so I end up having to restart the flight.

I have disabled (yes, ‘enabled’ the ‘Disable’ option) for Engine Damage and Icing to test. Realism is set to ’Modern’. Program restarted, system restarted, caches flushed, no mods, SU4, no double bindings on HOTAS or keyboard, not in developer mode and no developer options enabled.

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?Routinely (every 2nd to 3rd flight).

YOUR SETTINGS

[PC Only] Are you using Developer Mode or have you made any changes to it? NO

[PC, MSFS 2020 Only] Are you using DX11 or DX12? DX12

[PC Only] What GPU (Graphics Card) do you use? GeForce RTX 5070Ti

[PC Only] What other relevant PC specs can you share? Ryzen 7 9800X3D, 64G DDR5, MAG B850 Tomahawk Max Wifi, X-56 Rhino, Honeycomb Alpha Lite/Bravo Lite, PiMax Crystal Light, 1GB coax cable internet.

Thank you in advance for your time and any input you may have to resolve this situation.

1 Like
2

Exactly the same issue, only I was cruising at about 5000 ft.

The Engine Malfunctions, and ther is absolutely no way to restart the engine either manually or with Ctrl-E. All the gauges were normal before the crash. It crashed first with 51% fuel. Then with engine dead i CRASHED rthe plane on purpose, it restarted at 1000ft with engine running. Went up to 5000ft, everything normal except of course now 47% fuel, all gauges normal, and after about 10 minutes of cruising Engine Malfunction again. This is a systematic bug IMHO.

PC, no Developer Mode, no addons installed at all, CPU Intel i5-13500, GPU AMD 6750. I am a retired IT specialist, I run gadgets that show no abnormality. This is not a hardware issue. Please note that I have 34 years of experience flying every existing Microsoft Flight Simulator (except 2000).

Common bug with the Beechcraft V35B (also aspirated with manual mixture).

1 Like
3

Can replicate the issue (SU5 Beta), after maybe 10 minutes of flight in normal conditions engine started to fail:

3 Likes
4

Did 2 more flights more than 20 minutes duration and no issue. Seems a random issue.

5

Yeah. I did three (3) ~30 min flights yesterday and on flight #3 it happened again. Luckily, I was on the taxiway as it was a short field. I even tried to lean the fuel for the cruise part of the flights and then return to rich in the pattern. Almost got tricked into thinking that was it. Tried it with ‘Auto Mixture’ setting and still happens. Rules that out, I guess. Lol

Will be interesting to see if it continues to happen when I upgrade my plane. I wouldn’t be sad if it was an optional setting you could toggle on or off. When on, it may occasionally have a failure and if you are able to successfully do an emergency landing then it gives you a badge or reward or something and then sets you back to as you were right before it happened to continue your flight. But having a goal/planned flight and then getting stuck in a field or on a road with no way to move on is a bummer. So I just let it crash and then let it spawn me back to some point shortly before the crash and try to recover the rest of my flight/altitude/cruise/trim/etc.