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1. [1] Federal Aviation Administration (FAA) — Advisory Circular 91.21-1D: Use of Portable Electronic Devices Aboard Aircraft Báo cáo chính phủ

   Advisory Circular 91.21-1D: Use of Portable Electronic Devices Aboard Aircraft

   Thống kê

   FAA determined that airlines may allow portable electronic devices during all phases of flight, provided testing demonstrates the aircraft can tolerate potential interference

   Trích đoạn

   “"This AC provides guidance for use of portable electronic devices (PEDs) aboard aircraft. Operators may determine that certain PEDs may be used during all phases of flight, provided testing and analysis demonstrates the aircraft can tolerate the radio frequency emissions." ”

   Dữ liệu nguồn từ

   2013-10-28

   Truy cập

   2026-04-18 · bản sao lưu trữ

   Tính toán

   The FAA's 2013 advisory circular is the regulatory instrument that relaxed PED restrictions. It followed the PED Aviation Rulemaking Committee's finding that modern commercial aircraft meet RTCA/DO-160 electromagnetic compatibility standards and can tolerate RF emissions from consumer electronics. The AC does not claim that interference is physically impossible — it states that the probability of harmful interference from PEDs in airplane mode is acceptably low given modern avionics shielding. Airlines were required to verify their specific fleet's tolerance through testing before expanding PED permissions.

2. [2] Wikipedia (citing FAA, FCC, EASA, and RTCA sources) — Mobile phones on aircraft Bách khoa toàn thư

   Mobile phones on aircraft

   Thống kê

   No aircraft accident has been attributed to interference from passenger mobile phones; the FCC ban on in-flight calls relates to ground network interference, not aviation safety

   Trích đoạn

   “"No one has officially or definitively linked cell phone usage to an airline accident. Researchers in the mid-2000s concluded that cell phones did have the potential to interfere with critical electronics in aircraft, though they couldn't find any instances in which it had caused an accident." ”

   Dữ liệu nguồn từ

   2024-06-15

   Truy cập

   2026-04-18 · bản sao lưu trữ

   Tính toán

   Wikipedia's article synthesizes the regulatory history: the original FCC ban (47 CFR 22.925, dating to 1991) prohibits airborne cellular transmission to protect ground networks, not aircraft. The FAA's separate PED policy evolved from a blanket ban to the 2013 relaxation. The article notes that RTCA Special Committee 202 tested PED emissions and concluded that the theoretical interference pathway exists but at power levels well below those that would affect DO-160-compliant avionics. Used as a contextual source; the FAA AC is the authoritative primary.

   Độc lập

   Wikipedia synthesizes FAA, FCC, and RTCA sources rather than presenting independent evidence. Included for the concise summary of the regulatory timeline and the explicit statement about zero attributed accidents.

3. [3] CNN — FAA allowing most electronic device use throughout flights Bài báo tin tức

   FAA allowing most electronic device use throughout flights

   Thống kê

   FAA announced in October 2013 that passengers may use most PEDs in airplane mode during all phases of flight, including takeoff and landing

   Trích đoạn

   “"The FAA said that airlines can allow passengers to use portable electronic devices such as tablets, laptop computers, e-readers and cell phones in airplane mode throughout the flight — with some circumstantial restrictions." ”

   Dữ liệu nguồn từ

   2013-10-31

   Truy cập

   2026-04-18 · bản sao lưu trữ

   Tính toán

   Contemporary news coverage of the FAA's 2013 policy change. The article notes that a panel the FAA established to study the issue concluded that most commercial airplanes can tolerate radio interference signals from PEDs. Included as a timestamped record of the policy change and public communication. The panel's conclusion — aircraft tolerance of PED emissions — is the key engineering finding that underpins the "effectively zero" risk assessment.

4. [4] Radio Technical Commission for Aeronautics (RTCA) — RTCA DO-160: Environmental Conditions and Test Procedures for Airborne Equipment Nguồn tham khảo

   RTCA DO-160: Environmental Conditions and Test Procedures for Airborne Equipment

   Thống kê

   DO-160 is the standard for electromagnetic compatibility testing of all commercial avionics, including tolerance to external RF sources

   Trích đoạn

   “"DO-160 specifies a series of minimum standard environmental test conditions and applicable test procedures for airborne equipment. Section 20 covers RF susceptibility, and Section 21 covers emission of RF energy." ”

   Dữ liệu nguồn từ

   2010-12-01

   Truy cập

   2026-04-18 · bản sao lưu trữ

   Tính toán

   RTCA/DO-160 (current revision G) is the engineering standard that ensures avionics can withstand electromagnetic interference. Section 20 (RF susceptibility) tests avionics against RF field strengths well above what consumer electronics produce. The standard has been updated progressively since 1975 to reflect evolving RF environments, including cellular, Wi-Fi, and Bluetooth frequencies. Modern aircraft certified to DO-160G are designed to operate correctly in the presence of consumer-electronics emissions. This standard is the technical basis for the FAA's 2013 policy change.

5. [5] IEEE Spectrum — Unsafe At Any Airspeed? Đã xác minh Nguồn tham khảo

   Unsafe At Any Airspeed?

   Thống kê

   RF monitoring aboard 37 US commercial flights (Sept-Nov 2003) detected unauthorized in-flight cell phone calls at a rate of one to four per flight, plus signals consistent with at least one passenger leaving a phone on during most flights

   Trích đoạn

   “"We measured the RF environment on 37 passenger flights in the eastern United States from September 2003 through November 2003... Results from our analysis imply that calls from on board scheduled commercial aircraft in the eastern United States occur at a rate of one to four per flight... We saw other signals that suggest that at least one passenger neglects to turn off his or her cellphone on most flights." ”

   Dữ liệu nguồn từ

   2006-03-01

   Truy cập

   2026-07-03 · bản sao lưu trữ

   Xác minh

   Trích đoạn đã được tải lại độc lập và xác nhận đúng từng chữ so với nguồn được trích dẫn trong quá trình kiểm định căn cứ của chúng tôi.

   Tính toán

   Bill Strauss (Carnegie Mellon University, engineering and public policy PhD thesis "Portable Electronic Devices Onboard Commercial Aircraft: Assessing the Risks," 2005) led the first documented study of in-flight RF emissions from passenger electronics, hiding a spectrum analyzer in carry-on luggage across 37 flights. The study found unauthorized calls occurring at a rate of one to four per flight and RF signatures consistent with at least one passenger leaving a phone powered on during most flights — the source for this entry's "phones routinely left on" and "mid-2000s RF detection research" claims. Strauss described the finding as suggestive rather than alarming, and no airline accident has ever been attributed to the emissions his team detected.