Citing an anonymous source, CNN reported that "air traffic control officials realized they had a computer issue late Tuesday" and decided "to reboot the system when it would least disrupt air travel, early on Wednesday morning.CNN provided more details as follows:In the overnight hours of Tuesday into Wednesday, FAA officials decided to shut down and reboot the main NOTAM system—a significant decision, because the reboot can take about 90 minutes, according to the source.When the system came back online, "it wasn't completely pushing out the pertinent information that it needed for safe flight, and it appeared that it was taking longer to do that," CNN quoted its source as saying.Another FAA computer problem in the En Route Automation Modernization (ERAM) system caused flight delays at major airports in Florida less than two weeks ago.On its website, the FAA says it is "modernizing the NOTAM system to improve the delivery of safety critical information to aviation stakeholders," with the goal of "provid[ing] pilots, flight crews, and other users of the National Airspace System (NAS) with NOTAMs that are relevant, timely and accurate.""