- Boeing Knew About Flaws in UPS Plane That Crashed in Louisville, N.T.S.B. Says The New York Times
- NTSB investigators pinpoint failed aircraft part from UPS crash last year CNN
- A part that broke on a UPS plane that crashed in Kentucky failed 4 times on other planes years ago AP News
- In UPS crash, NTSB probing MD-11 engine mount issue first identified by Boeing in 2011 The Air Current
- Cracked part in fatal UPS crash flagged in 2011 by Boeing CNBC
