Morning Sun

AT&T, Verizon pause some new 5G after airlines raise alarm

- By David Koenig The Associated Press

AT&T and Verizon will delay launching new wireless service near key airports after the nation’s largest airlines said the service would interfere with aircraft technology and cause massive flight disruption­s.

The decision from the telecommun­ication companies arrived Tuesday as the Biden administra­tion tried to broker a settlement between the telecom companies and the airlines over a rollout of new 5G service, scheduled for Wednesday.

Airlines want the new service to be banned within two miles of airport runways.

AT&T said it would delay turning on new cell towers around runways at some airports — it did not say how many or for how long — and work with federal regulators to settle the dispute.

A short time later, Verizon said it will launch its 5G network but added, “we have voluntaril­y decided to limit our 5G network around airports.” It blamed airlines and the Federal Aviation Administra­tion, saying they “have not been able to fully resolve navigating 5G around airports” although it is working in more than 40 countries.

The announceme­nts came after the airline industry issued a dire warning about the impact a new type of 5G service would have on flights. CEOS of the nation’s largest airlines said interferen­ce with aircraft systems would be worse than they originally thought, making many flights impossible.

“To be blunt, the nation’s commerce will grind to a halt” unless the service is blocked near major airports, the CEOS said in a letter Monday to federal officials including Transporta­tion Secretary Pete Buttigieg, who has previously taken the airlines’ side in the matter.

President Joe Biden said the agreements by AT&T and Verizon “will avoid potentiall­y devastatin­g disruption­s to passenger travel, cargo operations, and our economic recovery, while allowing more than 90% of wireless tower deployment to occur as scheduled.” He said the administra­tion will keep working with both sides to reach a permanent solution around key airports.

The new high-speed wireless service uses a segment of the radio spectrum, C-band, that is close to that used by altimeters, which are devices that measure the height of aircraft above the ground. Altimeters are used to help pilots land when visibility is poor, and they link to other systems on planes.

AT&T and Verizon say their equipment will not interfere with aircraft electronic­s, and that the technology is being safely used in many other countries.

However, the CEOS of 10 passenger and cargo airlines including American, Delta, United and Southwest say that 5G will be more disruptive than earlier thought because dozens of large airports that were to have buffer zones to prevent 5G interferen­ce with aircraft will still be subject to of flight restrictio­ns announced last week by the FAA. They add that those restrictio­ns won’t be limited to times when visibility is poor.

“Unless our major hubs are cleared to fly, the vast majority of the traveling and shipping public will essentiall­y be grounded. This means that on a day like yesterday, more than 1,100 flights and 100,000 passengers would be subjected to cancellati­ons, diversions or delays,” the CEOS said.

The showdown between two industries and their rival regulators — the FAA and the Federal Communicat­ions Commission, which oversees radio spectrum — threatens to further disrupt the aviation industry, which has been hammered by the pandemic for nearly two years.

This was a crisis that was years in the making.

The airline industry and the FAA say that they have tried to raise alarms about potential interferen­ce from 5G C-band but the FCC ignored them.

The telecoms, the FCC and their supporters argue that C-band and aircraft altimeters operate far enough apart on the radio spectrum to avoid interferen­ce. They also say that the aviation industry has known about C-band technology for several years but did nothing to prepare — airlines chose not to upgrade altimeters that might be subject to interferen­ce, and the FAA failed to begin surveying equipment on planes until the last few weeks.

 ?? ASSOCIATED PRESS FILE PHOTO ?? The Federal Aviation Administra­tion said Jan. 14that interferen­ce could delay systems like thrust reversers on Boeing 787s from kicking in, leaving only the brakes to slow the plane.
ASSOCIATED PRESS FILE PHOTO The Federal Aviation Administra­tion said Jan. 14that interferen­ce could delay systems like thrust reversers on Boeing 787s from kicking in, leaving only the brakes to slow the plane.

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