According to CoinMeta, the Federal Aviation Administration (FAA), identified as FAA, lifted a nationwide flight ban at 8:15 p.m. on November 13 due to communication failures. The flight ban lasted for over four hours. According to Reuters, 6,600 flights were canceled and 8,600 flights were delayed, with further cancellations expected on Sunday. Airline stocks declined as investors weighed this disruption against a proposed $50 billion system upgrade. American Airlines, Delta Air Lines, and United Airlines all fell 1% to 2% in after-hours trading, while JetBlue Airlines fell approximately 3%. Transportation Secretary Shawn Duffy stated that overloaded routers and switches caused inconsistencies in data at air traffic control centers. This flight ban exposed how a single failure in shared infrastructure can affect the entire industry.