[DIRTYSECRET]

What’s there to know? The plane crashed.

[Java4Jay]

https://aviationweek.com/air-transport/safety-ops-regulation/ups-md-11-accident-investigators-find-engine-pylon-cracks

Fatigue cracks in part of the aircraft’s left engine pylon assembly have emerged as a key factor in the Nov. 4 fatal crash of a UPS McDonnell-Douglas MD-11 Freighter (MD-11F). Investigators found cracks in the left (No. 1) engine pylon’s aft bulkhead forward and aft mount lugs, a preliminary NTSB...

[StAnDeliver]

It’s possible, given the age of the model, the diminishing reserve of parts in the Arizona boneyard (and thus quality denigration of the remaining parts, given ‘save-the-worst-for-last’), the no-recovery design flaw that likely extinguished the center engine at v2 after the left engine flipped over the wing and ignited the remaining left-wing infrastructure, that another MD-11 or MD-10 will ever fly again.

[Ben Dover]

Here is a link to the NTSB’s preliminary analysis document:
https://www.ntsb.gov/Documents/Prelimiary%20Report%20DCA26MA024.pdf.

[Java4Jay]

Same point of failure as AA’s Chicago crash

https://avm-mag.com/wp-content/uploads/2023/12/pylon-to-wing-attachment.png.webp

[Java4Jay]

Some good photos of failed aft lug

What caused the UPS plane crash?

https://www.whas11.com/article/news/national/ups-plane-crash/ups-plane-crash-ntsb-report-photos-fractured-parts/417-510e3279-d4e7-4271-afbe-376f7de579d1

[pterional]

So many questions to ask. Were there stress fractures on the other pylon attachment? After national inspection, how many more DC 10 and DC 11 aircraft have these fractures? Maybe this is the last time any DC 10 or DC 11s fly.

[logi_cal869]

I’ve been having deja vu:

https://aerospaceglobalnews.com/news/mcdonnell-douglas-dc-10-md-11-differences/

https://www.aerotime.aero/articles/american-airlines-crash-chicago

https://www.code7700.com/case_study_american_airlines_191.htm