PHILADELPHIA (WPVI) — A new ground stop was issued Monday afternoon at Philadelphia International Airport as crews worked to resolve an equipment outage.

The Federal Aviation Administration said the latest ground stop was expected to remain in effect until 5 p.m.

The outage has caused travel disruptions throughout the day, leading to delays for arriving and departing flights.

Flights into Newark Liberty International Airport also remain paused. The airport says United is canceling the remainder of Monday’s planned domestic mainline and United Express flights to and from Newark to enable an orderly resumption of operations.

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Flights have been stopped at both Philadelphia International Airport and Newark Liberty International Airport due to equipment outages, according to the Federal Aviation Administration, with no estimated time for resuming.

FAA Administrator Bryan Bedford said a circuit blew at the Philadelphia TRACON air traffic control facility on Monday morning, and when the backup system went into place, officials discovered the backup line had been cut at a New Jersey construction site.

In order to change the circuit in Philadelphia, Bedford said the airspace in the Northeast would be closing for at least 30 minutes, and ground stops were expanded to include New York City’s John F. Kennedy International Airport and LaGuardia Airport as part of the work.

Airspace has since reopened at JFK and LaGuardia, but officials said the fix to replace the circuit in Philadelphia has not worked, leaving operations still halted at Philadelphia and Newark’s airports, with no time estimate for when they’ll resume.

Some inbound flights have been diverted to other airports.

United Airlines, which has one of its hubs at Newark airport, said the “FAA technology outage is affecting all airlines in the Northeast.”

“Flights that had been destined for Newark have either been held at their departure airport or diverted to alternative airports,” United said in a statement. “Once the FAA outage is resolved, we will work to safely get our customers to their destinations, and have issued a travel waiver to give our customers flexibility to manage their travel plans.”

Stay with Action News and 6abc.com as this story develops.

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