United Airlines is facing tighter scrutiny and may have to pause expansion plans after several safety incidents like a tire falling off a plane

• The FAA is upping its oversight of United Airlines following a spate of safety events.
• A tire fell off a United Boeing 777 and another plane veered off the runway, among others.
• Bloomberg reports United is being stopped from approving new pilots and may not be allowed to add new routes.

United Airlines is facing tighter scrutiny from the Federal Aviation Administration following a string of safety incidents.

In a Friday memo to employees seen by Business Insider, Sasha Johnson, a vice president of corporate safety, said: "We will begin to see more of an FAA presence in our operation as they begin to review some of our work processes, manuals, and facilities."