Observations of the video available showing the engine failure and fire aboard United Airlines flight 328 on Feb 20 2021.
From the point of view of an engine guy.
Here is a link to P&W's page about this engine:
https://prattwhitney.com/products-and-services/products/commercial-engines/pw4000-112


Here's an operating manual for the P&W4000 series engines for pilots:
https://www.theairlinepilots.com/forumarchive/a310/a310pw4000seriesoperation.pdf

The Turbofan design engineer referred to in the video is my friend grahamj9101

When the final NTSB report is released, we will see how close or how far off the mark I really am.

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