Aviation authorities were forced to temporarily ground all domestic flights across the United States on Wednesday due to a crucial alert system outage, triggering thousands of delays and cancellations.

The Federal Aviation Administration said normal operations were being restored but the early morning halt created knock-on effects that snarled travel throughout the day.

READ MORE: https://mb.com.ph/2023/01/12/us-flights-grounded-over-system-outage-snarling-airports/