As fog shrouded Paine Field in Everett, Wash., on Monday, Alaska Air regional carrier Horizon Air was forced to cancel all commercial flights in and out of the airfield because of potential 5G interference. Now some Tuesday flights are being canceled.
SEATTLE - As fog shrouded Paine Field in Everett on Monday, Alaska Air regional carrier Horizon Air was forced to cancel all commercial flights in and out of the airfield because of limitations on low visibility flying imposed to avoid 5G interference.Horizon is currently the sole airline operating commercial flights out of Paine Field and all those are flown on the Embraer E175, a 76-seat regional jet.
“We tried some accommodations through busing folks down to Sea-Tac,” said Sprague. “Of course, it’s disruptive no matter what, and no guarantee that somebody would be able to get on a similar flight out of Sea-Tac.” The new, more powerful 5G radio signals turned on last week at cell towers around the country can potentially interfere with an instrument called an altimeter that’s used to precisely measure how high a plane is above the ground. That data is fed into other systems and a false reading could endanger the aircraft.
“The configuration of the Honeywell radio altimeter in the E175, and how it integrates with the other aircraft systems on the E175, are such that the the likelihood of interference from the 5G signal is greater,” said Sprague.While the E175 was barred from using one runway at Seattle-Tacoma International Airport, it was cleared for the runway there that’s most typically used for low visibility conditions. That “effectively gave us good coverage for Sea-Tac,” said Sprague.
Flights out of Paine Field fly to larger vacation destinations, such as Phoenix and Palm Springs. But Portland is a hub for Alaska, and Sprague said that if fog closes in on the city in the coming days, the impact will be greater.
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