Piston MSB affecting newer engines - MSB-E4-043

[bayareacfi]

Absolute Aero sent me info on MSB-E4-043. Piston borescoping required to inspect for cracks. Seems to affect engines produced after January 2023.

Repeated inspections every 50 hours is brutal for airplane downtime, even if covered under warranty for the entire life of the engine (which may or may not be the case).

[mfdutra]

Did you get affected Jonathan? I'm one serial before yours and I'm not affected.

[Bryce]

That's great you're not affected. The AD in Europe is on every single engine, even on the DA42s. Even the first DA62 manufactured ever. If I'm reading it correctly since it says starting at serial number 00001! I wonder if/when this will turn into an AD here?

[michael.g.miller]

I think the AD is just to reference the MSB. https://wwwapps.tc.gc.ca/saf-sec-sur/2/ ... 0172-E.PDF says "Group 1 are engines having an affected part installed." I interpret that to mean that if you are not in the MSB then you are not obligated to do anything.

My ancient (2011) engines are luckily not impacted, according to my A&P!

[bayareacfi]

Did you get affected Jonathan? I'm one serial before yours and I'm not affected.

Yeah. My left engine is affected but the right one is not. Right on the cutoff, apparently.

[MarkO]

For the 62, it appears to affect all engines after 06221 and, additionally, any engines that have had a core replacement with the serial numbers listed, OR, that have had new pistons fitted with the part number N E4A-72-400-000. Every engine produced after Jan 2023 now needs invasive maintenance every 50 flight hours. There will be many very unhappy customers of new aircraft if Diamond doesn't manage this exceptionally well.

[bdbogle]

For the 62, it appears to affect all engines after 06221 and, additionally, any engines that have had a core replacement with the serial numbers listed, OR, that have had new pistons fitted with the part number N E4A-72-400-000. Every engine produced after Jan 2023 now needs invasive maintenance every 50 flight hours. There will be many very unhappy customers of new aircraft if Diamond doesn't manage this exceptionally well.

Great, I've got a DA62 delivering in October. This will be "fun".

[pete423]

If I am reading this correctly, every engine after E4A -6470 is affected. The plane is effectively grounded until the inspection if your total tach hours is above 100.. Wow..

[MarkO]

The same as the last AD—one flight up to three hours with no pax and VMC. At least it's a reasonably quick inspection (hopefully on the same day, although the maintainers will need a little time for the engine to cooldown).

[ScottOHare]

This MSB would really make me think twice about owning a Diamond without a service center on field. 50 hour inspections isn't a lot of time. I would also worry about maintenance induced failures. These are really great planes to fly. I really hope Diamond can figure this out and Austro can build a reliable Jet A engine. Or if not then can Continental step in.