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5G could interfere with radio altimeters on most Boeing 737s, FAA says
FAA is warning that 5G emissions could interfere with radio altimeters in most Boeing 737 jets and impact airplane landings.The Federal Aviation Administration's directive affects all Boeing 737 family jets except its 200 and 200-c series, a Federal Register notice posted online on Wednesday said. (www.airlinerwatch.com) Más...Sort type: [Top] [Newest]
It’s the specific frequency band not the 5G technology that is the problem. Important distinction.
Completely agree, John. Whoever supplies the radio altimeters' for the 737 should be responsible for the repair of the radios. There is no excuse for the radio altimeter not being able to isolate itself from nearby frequencies. i.e., Motorola has accomplished this for years with commercial radios.
There is an excellent article that addresses the issue here. https://www.aviationtoday.com/2021/12/23/faa-issues-new-radar-altimeter-5g-c-band-risk-assessment-request-aviation-industry/
There is an excellent article that addresses the issue here. https://www.aviationtoday.com/2021/12/23/faa-issues-new-radar-altimeter-5g-c-band-risk-assessment-request-aviation-industry/
You cannot just suddenly change out the transmitter of several thousand units.
Besides, this was brought on by the FCC and cellular carriers. It's not the fault of aircraft operators.
Besides, this was brought on by the FCC and cellular carriers. It's not the fault of aircraft operators.
I agree that changing all of these altimeters now is a huge challenge. But the FAA has known about the proposed 5G spectrum for over 7 years, and it has had over 2.5 years since the frequency bands were auctioned in order to facilitate the necessary upgrades. The FAA (and the airlines) completely dropped the ball on this.
It has nothing to do with actual 5G technology. It's about FREQUENCY BANDS.
Secondly, the RF altimeters have been in use in their current band for decades. The FCC knew this. They still sold the adjacent band for $80 Billion knowing the likelihood of interference.
It's not on the FAA nor aircraft operators. It's on those who came LAST.
Secondly, the RF altimeters have been in use in their current band for decades. The FCC knew this. They still sold the adjacent band for $80 Billion knowing the likelihood of interference.
It's not on the FAA nor aircraft operators. It's on those who came LAST.
Douglas refers to 5G spectrum, not 5G technology. The band is entirely separate from that designated for radar altimeters.
Furthermore, you say "cannot just suddenly change out". But Douglas rightly points out that the only reason it's "suddenly" is because the FAA and the equipment manufacturers have ignored the issue for 7 years. Where would we be if they'd gotten their act together back then?
Furthermore, you say "cannot just suddenly change out". But Douglas rightly points out that the only reason it's "suddenly" is because the FAA and the equipment manufacturers have ignored the issue for 7 years. Where would we be if they'd gotten their act together back then?
There is more than one band being used for 5G. The band in question is directly below that used for RF altimeters.
Who was there FIRST?
Who was there FIRST?
Just a quick pass-thru of the document. Can you point out where actual flight tests were conducted and type aircraft/altimeter combination were flown...vs simulations? Thanks.