Staff shortages and equipment failures at Newark Liberty International Airport have raised safety concerns in recent weeks.

Caught in the middle of the issues at Newark is United Airlines, which is the most active airline at the New Jersey airport. While the problems lie with the FAA system, the airline is where people often aim their frustrations over cancellations and delays.

The airline told the Sun the e-mail was sent to passengers who have upcoming flights to or through Newark’s airport, as well as its MileagePlus

"We've turned the corner, and we have the commitment," United Airlines CEO Scott Kirby said of reforms to the Federal Aviation Administration.

Three incidents at Newark have shaken the public. Meanwhile, the FAA is understaffed. Here's what the Trump administration wants to do about it.