KNX In Depth's Charles Feldman and Rob Archer talk about how United is the latest airline to confirm that it found aircraft engines with questionable parts linked to a certain supplier. This came a day after Virgin Australia said it found falsely documented engine parts.  With us is Shawn Pruchnicki, retired airline pilot and currently a professor of aviation safety and operation at Ohio State University. 

(Photo by Justin Sullivan/Getty Images)

<p>KNX In Depth's Charles Feldman and Rob Archer talk about how United is the latest airline to confirm that it found aircraft engines with questionable parts linked to a certain supplier. This came a day after Virgin Australia said it found falsely documented engine parts.  With us is Shawn Pruchnicki, retired airline pilot and currently a professor of aviation safety and operation at Ohio State University. </p>
<p>(Photo by Justin Sullivan/Getty Images)</p>

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