Passenger jet lost parts landing at KDEN?

[Cap'n Jack]

I wonder what happened- plane landed safely, but appears to have dropped engine nacelle parts on the way to KDEN.

 

[PeterNSteinmetz]

Maybe three failures, one back in December:
https://simpleflying.com/jal-boeing-777-engine-cover/

Also, towards the bottom of this article:
https://www.avweb.com/aviation-news/united-777s-grounded-faa-preparing-ad-japan-bans-777-flights/

It will very interesting to hear the service history of these engines. The PW4000-112 has been around since 1995.

 

[PeterNSteinmetz]

Nice picture. But am I missing something about how this tells us about the service history of these engines?