Kathmandu, Jul 19: A sudden disruption in electronic communications has caused all flights of major US airlines to be stopped. The affected airlines include Delta, United, and American Airlines, as reported by the US Federal Aviation Administration (FAA).

Key Points:

1. Ground Stop Details:
– The FAA has announced a ground stop affecting all airline flights, regardless of their destinations.
– It remains unclear how long this disruption will last.

2. Recent Outage Context:
– This incident follows an important Microsoft outage on Thursday, which caused Frontier Airlines to halt operations for several hours.
– Frontier Airlines’ systems were significantly impacted, prompting the airline to offer refunds to affected passengers.

3. Wider Impact:
– Other airlines, including Allegiant and Sun Country, have also reported difficulties with booking, check-in, and trip-management functions due to the disruption.
– The FAA has specifically grounded all Allegiant flights.

4. Microsoft’s Role:
– Microsoft acknowledged service issues affecting some customers in Central America, attributing the problem to service management operations and connectivity or availability issues.
– The company has identified the cause of the outage and is working on a fix, though a spokesperson did not immediately respond to CNN’s request for comment.

The widespread disruption has caused significant inconvenience to passengers and airline operations, highlighting the critical reliance on electronic communication systems in the aviation industry. The resolution timeline remains uncertain as efforts continue to address the underlying issues.