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[12] Tegler E. The FAA is concerned enough about 5G’s potential to affect radar altimeters that it issued a directive [Internet]. New York City: Forbes; 2021 Nov 4 [cited 2022 May 1]. Available from: https://www.forbes.com/sites/erictegler/2021/11/04/the-faa-is-concerned-enough-about-5gs-potential-toaffect-radar-altimeters-that-it-issued-a-directive/?sh=6d41e54ff1e9. 链接1

[13] Safety alert for operators. Report. Washington, DC: US Department of Transportation Federal Aviation Administration; 2021.

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[17] Cousins B. Here’s why 5G is so concerning for US airlines, and what Canada has done to fix it [Internet]. Toronto: CTV News; 2021 Jan 19 [cited 2022 May 1]. Available from: https://www.‍ctvnews.‍ca/canada/here-swhy-5g-is-so-concerning-for-u-s-airlines-and-what-canada-has-done-to-fixit-1.5745217. 链接1

[18] SRSP-520—technical requirements for fixed and/or mobile systems, including flexible use broadband systems, in the band 3450‍‒‍3650 MHz [Internet]. Ottawa: Government of Canada; 2021 Nov [cited 2022 May 1]. Available from: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf11619.html. 链接1

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[20] Tegler E. The FAA throws down against the FCC and telecoms with sample 5G restriction NOTAMs [Internet]. New York City: Forbes; 2021 Dec 29 [cited 2022 May 1]. Available from: https://www.forbes.com/sites/erictegler/2021/12/29/the-faa-throws-down-against-the-fcc-telecoms-with-sample-5grestriction-notams. 链接1

[21] Brodkin J. FAA forced delay in 5G rollout despite having no proof of harm to aviation [Internet]. Boston: Ars Technica; 2021 Nov 19 [cited 2022 May 1]. Available from: https://arstechnica.com/tech-policy/2021/11/faa-forceddelay-in-5g-rollout-despite-having-no-proof-of-harm-to-aviation/. 链接1

[22] Ngo M, Cameron C. FAA Administrator Steve Dickson will resign next month [Internet]. New York City: New York Times; 2022 Feb 17 [cited 2022 May 1]. Available from: https://www.nytimes.‍com/2022/02/17/us/politics/stevedickson-faa-resigns.html. 链接1

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[25] Brodkin J. Airlines’‍faulty altimeters spur FCC plan to regulate wireless receivers [Internet]. Boston: Ars Technica; 2022 Apr 23 [cited 2022 May 1]. Available from: https://arstechnica.‍com/tech-policy/2022/04/fcc-to-fightwireless-devices-that-receive-signals-from-the-wrong-frequencies/. 链接1

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