DA-42 in-flight engine failure
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- steve_falconer
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Re: DA-42 in-flight engine failure
Looks like a misquote on Lycoming engine failures. Not one engine failure out of every 1,100 hours, but about one engine failure out of 1,100 engines! or 0.91/1,000 engines from the referenced link showing Lycoming, Continental, and Rotax.
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Re: DA-42 in-flight engine failure
Update 5th Sep 2023:
Today, after 12 days, the same mechanic came to change the fuel pump. When removing the old one he found pieces of gears (not sure which - I am still waiting for the report and images). This most probably means that the aircraft will need a new engine.
Today, after 12 days, the same mechanic came to change the fuel pump. When removing the old one he found pieces of gears (not sure which - I am still waiting for the report and images). This most probably means that the aircraft will need a new engine.
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Re: DA-42 in-flight engine failure
Probably this gear which is found inside the high pressure fuel pump, the subject of a previous MSB.SamoL wrote: ↑Tue Sep 05, 2023 5:43 pm Update 5th Sep 2023:
Today, after 12 days, the same mechanic came to change the fuel pump. When removing the old one he found pieces of gears (not sure which - I am still waiting for the report and images). This most probably means that the aircraft will need a new engine.
Did the mechanic or Diamond say you may need a new engine?
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Re: DA-42 in-flight engine failure
Crazy that they could be installing faulty gears 2 years after the MSB. I hope it's not the same issue.
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Re: DA-42 in-flight engine failure
But on the other hand, I hope it's not a new issue...michael.g.miller wrote: ↑Tue Sep 05, 2023 8:47 pm Crazy that they could be installing faulty gears 2 years after the MSB. I hope it's not the same issue.
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Re: DA-42 in-flight engine failure
Update 6th Sep 2023:
Fuel pump was removed yesterday. Pieces of gears that drive it were missing and could not be located - so they have most probably fallen into the engine. This means the engine will most probably need to be replaced, as this presents a significant risk.
Fuel pump was sent to Austroengine together with a fuel sample.
Fuel pump was removed yesterday. Pieces of gears that drive it were missing and could not be located - so they have most probably fallen into the engine. This means the engine will most probably need to be replaced, as this presents a significant risk.
Fuel pump was sent to Austroengine together with a fuel sample.
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Re: DA-42 in-flight engine failure
If I remember correctly, the earlier situation was related to a manufacturing specification/tolerance issue with the drive gear at the end of the intake camshaft (shown in an earlier post), not with or within the HPP itself.
It's also possible that there could be an issue with the spur gear attached to the Bosch HPP. If either gear is out of tolerance, it's not good for either one.
Thanks for the updates.
It's also possible that there could be an issue with the spur gear attached to the Bosch HPP. If either gear is out of tolerance, it's not good for either one.
Thanks for the updates.
Last edited by chili4way on Wed Sep 06, 2023 2:11 pm, edited 1 time in total.
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Re: DA-42 in-flight engine failure
So it seems it's known issue. I would check part numbers and insist on changing both engines within warranty if the parts are from the same batch.
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Re: DA-42 in-flight engine failure
If you want to become familiar with the previous issue, see Austro Engine MSB-E4-034, MSB-E4-035, and MSB-E4-036. You can find Austro Engine documentation here: https://partners.diamondaircraft.com/s/files
It's important to let Austro complete their engineering diagnosis to determine what caused the issue. Either gear could be the source of the problem. That will determine the solution options available that will get you back in the air safely, as soon as possible with a reliable engine.
It's important to let Austro complete their engineering diagnosis to determine what caused the issue. Either gear could be the source of the problem. That will determine the solution options available that will get you back in the air safely, as soon as possible with a reliable engine.