The malfunction occurred in an FAA facility in Salt Lake City around 5 a.m.EST, when a card inside a router that processes flight plans and weather information started to fail.

• 盐湖城的一处FAA设施在美东时间上午5时左右发生故障，当时处理航班计划和天气信息的一台路由器内部的卡片开始出现故障。