The grounding of hundreds of United Airlines flights because of a computer glitch marked the latest in a series of airline delays and cancellations in the last few years that experts blame on massive, interconnected computer systems that lack sufficient staff and financial backing.
Chicago-based United Airline requested a ground stop for all U.S. departures early Wednesday morning that lasted for nearly 90 minutes. The airline blamed the problem on a failed computer network router that disrupted its reservation system.
The router problem “degraded network connectivity for various applications,” said Jennifer Dohm, United spokeswoman.
United attributed 59...