Travel plans for teams in multiple sports were disrupted by the FAA's nationwide ground stop of all flights because of communications problems.
FAA ground stop throws sports world into travel chaos ahead of weekend games
Original reporting
ESPN: read the full reportFollow this story
Earlier reports and follow-ups on the same developing story.
Related stories

Wales beaten in Norway as threat of Nations League relegation grows
Wales suffered a 3-1 defeat to Norway in Oslo despite a spirited performance, as the threat of relegation to the second tier of the Nations League now looms over Craig Bellamy's side.

Bompastor's risks pay off as Chelsea go top of WSL
In any big encounter you will often hear managers say it is the "fine margins" that decide a game. In this case, it was Sonia Bompastor's decisions.
Last-minute pickups for Week 10: Estime, Tyson among worthy adds
If injuries, bye weeks or tough matchups have you seeking lineup help, Matt Bowen lists potential options.
Buzz: Does Emmett Johnson have RB1 upside while Kenneth Walker III is out?
Kansas City rookie Emmett Johnson is expected to be thrust into a starting role for Week 10 with Kenneth Walker III ruled out.
Buckeyes' Smith continues record haul, adds Big Ten career receiving mark
Ohio State wide receiver Jeremiah Smith broke yet another record, eclipsing the Big Ten mark for career receiving yards during the first half vs. Northwestern.
Sources: Vikings made initial Cousins trade call before MNF meltdown
The Vikings initially reached out to the Raiders about a Kirk Cousins trade before their MNF game against the Bills, sources told ESPN and NFL Network.