The U.S. Federal Aviation Administration has come under increasing pressure from lawmakers, pilots and aviation experts to explain why it delayed grounding Boeing’s 737 Max 8 aircraft after the jet was involved in a second crash in less than six months.

The FAA on Wednesday made the decision to ground the planes, only after dozens of other countries already had. The agency’s acting director, Daniel Elwell, said they didn't have the kind of data that would warrant a grounding prior to...

Continue Reading Why the U.S. waited to ground the Boeing planes