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leebros

Engine failure

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Hi all,

 

After updating to SP1D, both engines keep failing for me at approaches. I've done 2 flights and it happened in both. Everything is going on ok, the aircraft is descending downwind the runway, then suddenly both engines stop working, I quickly turn starters to CONT to make them start back up and it works, start APU as well. However after 1 minute or 2 it will be down again and again until it hits the ground. I'm clueless, never seen anything odd like this before, I kept monitoring AP and saw nothing wrong to make the issue occur. 

 

Anyone else seeing the same?

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Do the engines stop working completely (as in, now power at all, no more fuel injected into the combustor), or do they just spool down to idle?

If it's the second... What is the "hardware A/T override" set to in your NGX?

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What fuel quantity due you have remaining? It could be you are running low on usable fuel. Being pitched down on approach might make this worse.

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I have had thousands of flying hours with PMDG 737NGX and never saw this kind of issue happening before. I am sure that I din't have any problem with fuel as I always have at least 1 ton of fuel remaining. Failures are not activated in FMC, service based failures either. Weather engine is ASN. It shows "Engine Fail" on both engines. Thanks.

 

qx1ISXG.jpg


Strange, it now even happens on ground after the aircraft loaded. 

 

Xf5edFv.jpg

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Do you use any hardware?

 

I do. Saitek yoke & throttle quadrant, and Logitech 3D Pro for rudder. All have been calibrated with FSUIPC.

I loaded the sim and the aircraft freshly for a walk on the ground to make a test and the issue happened, please see it in this screencast (at 2:30) 

 

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Do you have any axis assigned to fuel mixture? Try disconnecting hardware and see if it still happens without it.

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That SHOULDN'T matter Chris because you wont get an ENG FAIL if you place the start levers into Cut off.........if that's what you mean by fuel mixture

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That SHOULDN'T matter Chris because you wont get an ENG FAIL if you place the start levers into Cut off.........if that's what you mean by fuel mixture

Nameless,

 

FSX handles this strangely. Fuel mixture lean is used for the fuel cutoff levers. It's treated like fuel mixture even on a jet.

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Do you have any axis assigned to fuel mixture? Try disconnecting hardware and see if it still happens without it.

 

Million thanks to you Chris, my life saver. You spot it right!!! I had an axis for fuel mixture, unassigning it magically solved the issue.

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Nameless,

 

FSX handles this strangely. Fuel mixture lean is used for the fuel cutoff levers. It's treated like fuel mixture even on a jet.

Understood. But that is what I'm saying. He is getting a ENG FAIL on the DU. If you place to start levers to cut off you won't get this in the real thing.

Jack

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Understood. But that is what I'm saying. He is getting a ENG FAIL on the DU. If you place to start levers to cut off you won't get this in the real thing.

 

Right, but this is being caused by an unrealistic situation internal to the sim's inner workings.

 

 

 


Jack

 

Full names in the forum, please.

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Right, but this is being caused by an unrealistic situation internal to the sim's inner working.

 

AHH GOTCHA.

 

 

Full names in the forum, please.

OK but where's yours? Hehe

 

Jack Colwill

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OK but where's yours? Hehe

 

Jack Colwill

It's there. If you're on the mobile version, it doesn't show automatic signatures though.

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I'm just kidding anyway. Have to bug someone before 1 pm every day or my day isn't complete! Lol

Jack colwill

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I'm just kidding anyway. Have to bug someone before 1 pm every day or my day isn't complete! Lol

Jack colwill

 

haha - I feel ya on that one.

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Hello all

 

I had the same behaviour yesterday flying from EDDM to LOWW .. During descent ( LNAV / VNAV engaged ) suddenly one engine failed ... Didn't touch anything as I was reading my charts for approach. There was a purple message ( x-feed?? something ) ... Ho... He only change in descents was that I cutted the apu ( that I forgot to switch off after engine start ) and stopped the engine deice ( engine failure due to icing ??)

 

I will try to reproduce in same conditions tonight thanks to ASN historical weather

 

Philippe Bardyn

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I had the same behaviour yesterday flying from EDDM to LOWW .. During descent ( LNAV / VNAV engaged ) suddenly one engine failed ... Didn't touch anything as I was reading my charts for approach. There was a purple message ( x-feed?? something ) ... Ho... He only change in descents was that I cutted the apu ( that I forgot to switch off after engine start ) and stopped the engine deice ( engine failure due to icing ??)

 

Sounds almost like you planned your fuel pretty closely for the regular fuel burn for the flight, but the APU draws only from the #1 side. Leaving it on the whole flight ate into the fuel on the left side and starved the left engine. Just a thought. I don't know what your numbers were, though, so I can't say for sure.

 

Regardless, if an error that large was made, I'd question myself before questioning the plane.

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Thanks indeed... I question myself... but that's the goal of simulation...learning, learning and again learning

 

But in this case, the fuel prediction on the FMC was about 4 at destination, no warning on the screen and it was number 2 that failed

 

Sorry to dare to question the plane :unsure:

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Sorry to dare to question the plane

 

That's not at all what I was trying to say. In the battle of numbers between programs erring and humans erring (or causing the computer to err), the winner is very surely the human. Thus my comment, which was essentially to say "ensure you're not causing the issue first before asserting it's caused elsewhere.

 

Also, full names are required in the forum here. Please place your full name in your posts in the future.

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