Another major computer glitch hit United Airlines reservation system and website Tuesday afternoon, grounding planes for more than two hours and causing long lines and delayed flights.
The glitch was another in a long string of technology problems that began when it merged computer systems with Continental’s in March.
United said its IT department is reviewing the cause of the outage, and said it could not comment on whether the integration of the systems caused the problem.
United acknowledged at least 200 flights were delayed. Its passenger reservation system and website stopped working for about two-and-a-half hours on Tuesday afternoon, although the outage didn’t affect planes in flight.
The problem was severe enough that the airline asked the Federal Aviation Administration to issue “ground-stops” to prevent flights from taking off to some of its hub airports, including San Francisco, Newark and Houston. The FAA lifted the ground-stops at 4:30 p.m. so that planes could take off.
Angry and dismayed passengers took to Twitter to gripe. Some posted photos of long lines stacking up at airports across the country. Some passengers said boarding passes were being hand-written by United personnel.