SEATC, Wash. – The FAA grounded all Alaska Airways flights throughout the nation Wednesday morning for an hour, and delays have been anticipated to proceed all through the day.

The Seattle-based airline mentioned in a press release it requested a floor cease for all Alaska and Horizon air flights out of an abundance of warning after it “skilled a difficulty whereas performing an improve to the system that calculates our weight and steadiness.”

The bottom cease lasted from about 7:30 a.m. to eight:30 a.m. Pacific time, when flights started resuming.

The airline mentioned it anticipated residual delays all through the day and beneficial that vacationers verify their flight standing earlier than heading to the airport.

“This morning we skilled a difficulty whereas performing an improve to the system that calculates our weight and steadiness. Out of an abundance of warning, we requested a floor cease for all Alaska and Horizon flights, which was instituted at roughly 7:30 a.m. PT. The problem was mitigated and the bottom cease for Alaska and Horizon flights expired at 8:30 a.m. PT. Now we have begun releasing flights. Residual delays are anticipated all through the day. We apologize for the inconvenience and encourage visitors to verify the standing of their flights on alaskaair.com or the Alaska App previous to heading to the airport.”

Nearly all of the delays have been at Seattle-Tacoma Worldwide Airport.

As of 10:10 a.m., Seattle-Tacoma Worldwide Airport reported a complete of 136 flight delays and one cancelation. Of these, 99 are Alaska Airways flights and 19 are Horizon Air flights.

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The grounding got here as Senate committees held twin hearings Wednesday inspecting allegations of main security failures at Boeing, which has been pushed into disaster mode since a door-plug panel blew off a 737 Max jetliner throughout an Alaska Airways flight in January.