US grounds all departing flights over safety concernsThe US Federal Aviation Administration (FAA) on Friday issued a national ground stop, citing “extraordinary circumstances and for reasons of safety”.The FAA directed all departing flights to remain grounded until further notice, while inbound international flights would be handled on a case-by-case basis.The agency had earlier announced a ground stop at Chicago O'Hare International Airport due to a communications issue, according to its website.The FAA said equipment outages could lead to airborne holding at airports across the country's national airspace system.This is a developing storyMoney habits form by age 7. Is your child learning the right ones? Join the TOI Money Masterclass.