Piston MSB affecting newer engines - MSB-E4-043

[CavokCO]

Just did the 100hr initial inspection on our DA62, it's definitely somewhat of an invasive procedure. Not too difficult but it took a few tries to get the high pressure fuel lines from the fuel rail to the injectors to seat and seal correctly. Pistons look great, luckily.
We operate above 10k' MSL and 90% power almost all the time.
Sure would be nice if Diamond was a little more proactive with communication about this issue.

[SamoL]

Just had 200h inspection on my DA42. No problems. I have decided to wait as much as possible to reduce the number of inspections.

[nickname]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

[Bryce]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

What shop did the inspection, and what was the specific boreacope that was used?

[Soareyes]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

Still something torqued into a hole in the cylinder head right? How is that less likely to strip? Lower torque?

[nickname]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

What shop did the inspection, and what was the specific boreacope that was used?

Independent mechanic and utilized Voyager C40 HD 4-way Videoscope

[nickname]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

Still something torqued into a hole in the cylinder head right? How is that less likely to strip? Lower torque?

The torque setting for the injectors is extremely high. I'm surprised Diamond even opted to have service centers and owners go that route. It must be because it's the most viable.

[Bryce]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

Still something torqued into a hole in the cylinder head right? How is that less likely to strip? Lower torque?

The torque setting for the injectors is extremely high. I'm surprised Diamond even opted to have service centers and owners go that route. It must be because it's the most viable.

Probably because the shops can use a $350 HD camera and go in through the injectors. The one your guy has is $2,000+.

[Jetblast]

I sold it.

You already sold it? That was quick.
There are almost a dozen 62s listed here and there. You did good.

I agree with your comment on DAN.

Good luck!

[geekmug]

Just did the 3rd inspection and was able to get a specialized borescope to get photos via the glow plugs. Happy about no more risk to the head being stripped!

The glow plug is threaded into the head just like the fuel injector shoe bolt. On diesels, it's not uncommon for the glow plug to become seized because they are exposed to the combustion chamber (unlike the shoe bolt) and then break when trying to remove them. Nor is it uncommon to strip a head when installing a glow plug, but maybe it's less likely since it's not a torque-to-yield. Main thing I want to say is that there is no free lunch. Every inspection of the piston carries a non-zero chance that the plane will be AOG for a month or longer waiting on a new head.

On Dec 14, one of the LIFT Academy's DA40NG (N858L / 40.NC060) reported an engine failure after rotation and attempted to land back on the runway and overran into the grass at KIND (no injuries). https://www.facebook.com/reel/459106103644493