Federal safety investigators opened two days of hearings Tuesday to examine why the engine flew off a UPS cargo plane last year, causing a crash that killed 15 people, and why Boeing didn't address an underlying flaw sooner.
The engine separated from the MD-11's wing as it accelerated down the runway Louisville's Muhammad Ali International Airport in November. The crash killed three pilots on the plane and 12 people on the ground. More were injured.
"Please know: Your loved ones are the reason we're here. We want to find out what happened," Jennifer Homendy, chairwoman of the National Transportation Safety Board, said as she addressed families during her opening remarks.