５Ｇ端末、航空機の高度計に干渉する恐れ　仏当局

【パリＡＦＰ＝時事】フランス民間航空総局（DGAC）は16日、最新の第5世代（5G）端末が航空機の高度計に干渉する恐れがあると警告し、飛行中は電源を切るよう推奨した。（写真は資料写真）
　ＤＧＡＣの報道官は、「機内で５Ｇ端末を使用すると、高度が誤って表示される恐れがある」と述べた。「高度計で使うものと同程度、あるいはそれより強い、近接する周波数源からの信号干渉」が原因で、「着陸時に極めて重要な計器」に誤りを引き起こす恐れがあるとしている。
　ＤＧＡＣは先週、この問題について航空会社に告知し、飛行中は５Ｇ端末の電源を完全に切るか、機内モードに設定するよう勧告していた。
　大半の国はかねて、第４世代（４Ｇ）以前の通信網が航空計器や通信装置に干渉する恐れがあるとして、機内では端末の電源を切るか、機内モードに設定するよう求めていた。
　ＤＧＡＣによると、フランスの主要空港の近くでは、５Ｇ基地局が発する信号の強さが制限されている。【翻訳編集ＡＦＰＢＢＮｅｗｓ】
〔ＡＦＰ＝時事〕（2021/02/18-09:35）

The latest generation of smartphones, 5G, can interfere with aircraft altitude instruments, the French Civil Aviation Authority warned Tuesday as it recommended they should be turned off during flight.
The utilisation of 5G devices onboard aircraft could lead to risks of interference that could potentially result in errors in altitude readings, a spokesman for the agency told AFP.
The potential phenomenon is due to signal interference from a close frequency source of a strength that is similar or even superior to that of altimeters.
This interference can cause errors in instruments that are extremely critical during landing, said the agency, known by its French acronym DGAC.
It sent a bulletin on the issue to airlines last week, recommending that 5G phones should either be turned off completely or put in airplane mode during flight
Most countries have long required that mobile phones be turned off or placed in airplane mode due to concerns that previous generations of mobile telecommunications networks can interfere with a plane's navigation and communication equipment.
The DGAC also recommended that in cases of disruption to an aircraft's equipment that the flight crew immediately notify air traffic controllers who can then alert authorities at the airport.
DGAC also noted that it had laid out conditions for the positioning of 5G base stations in order to limit the risks of interference during landing at French airports.
The strength of signals from 5G base stations placed near France's main airports has been restricted, said the DGAC, which has been conducting additional testing since November when French telecommunications operators were given the green light to begin rolling out 5G services.
It is continuing to monitor 5G base stations around all French airports in cooperation with the agency responsible for radio frequencies.