The CEO of United Airlines penned a letter to employees outlining what he thinks the Federal Aviation Administration needs to do to fix all the delays plaguing Newark Liberty International Airport. The delays began last Monday when crews in the Philadelphia air traffic control facility that lines up flights into and out of Newark lost radar and communications with the planes for at least 30 seconds.

The FAA has a plan to make sure air traffic controllers at Newark airport don't lose contact with planes again.

United has been urging the government to limit the number of flights to what an airport can realistically manage based on staffing, CEO Scott Kirby said.