OKLAHOMA CITY – The Federal Aviation Administration briefly grounded all United Airlines flights on Tuesday morning.
Shortly after that, the agency announced that all United mainline flights were released from the groundstop.
We began delaying flights at approx. 8 a.m. CT to ensure aircraft departed with proper dispatch information. Flights are now departing.
— United Airlines (@united) June 2, 2015
The flights were grounded for about 39 minutes.