Posted on 01/17/2022 12:27:38 PM PST by Brown Deer
WASHINGTON, Jan 14 (Reuters) - The U.S. Federal Aviation Administration (FAA) said Friday it will require operators of Boeing 787s (BA.N) to take additional precautions when landing on wet or snowy runways at airports where new wireless services are deployed from next week.
The FAA said 5G interference could prevent engine and braking systems from transitioning to landing mode, which could prevent an aircraft from stopping on the runway.
On Jan. 7, the FAA disclosed the 50 U.S. airports that will have 5G buffer zones, including in New York City, Los Angeles, Chicago, Las Vegas, Minneapolis, Detroit, Dallas, Philadelphia, Seattle and Miami.
(Excerpt) Read more at reuters.com ...
The FAA said 5G interference could prevent engine and braking systems from transitioning to landing mode, which could prevent an aircraft from stopping on the runway.
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This sounds sort of important.
Really? That’s interesting. I’d like to know how they tested for this scenario.
They mean like new, additional precautions, right? Not the institution of a new policy of precautiousness.
I noticed my red state airport is not on the list.
They have had 5 G in places like S Korea since my son was stationed there in 2019. Seoul is a busy airport.
So are these particular to a new plane or are we still further behind in Tec than Seoul.
Sounds like they need to fix the plane.
5G specs were defined about 10 years ago.
“Really? That’s interesting. I’d like to know how they tested for this scenario.”
I can tell you that. I’ve done this sort of testing on other aircraft systems. I don’t know this particular aircraft system but I have tested and received certification for other systems so I know how the process works.
Every device on an aircraft is required to undergo elecgtromagnetic susceptibility testing. Basically they put it in a shielded chamber and blast it with various wavelengths. It takes a long time because you have to slowly sweep across the spectrum and also you regularly change out the antennas used (to best hit all the frequency ranges). What they are looking for are frequencies where the system stops working properly (crashes, reboots, engages unexpectedly, etc).
Now all the devices on the aircraft are shielded in various ways. But no shielding is perfect so sometimes a device is sensitive to a certain frequency. If they find a problem they proper test method is to stop at that frequency and hit the unit with lower and lower power levels of that EM frequency until you find out where it works as expected. At that point you have determined the ‘threshold’ of the susceptibility.
Now here is the key piece of information. After this is done a authority has to decide if an susceptibility is ok. For example if I am getting an coffeemaker certified and it has a acceptability to the VHF being sent out by the aircraft radio systems... I know that coffee maker isn’t mounted very close to those VHF antennas. So that issue is probably fine.
So lets get back to 5G. 787 systems probably (now I am guessing) have a known sensitivity to certain 5G frequencies. When the aircraft was certified that was ok because they did not expect it to be exposed to the power levels in those frequencies necessary to cause the problem. Then a few years later along comes 5G. The strongest broadcaster of 5G is the cell towers. So most likely those airports are ones where a cell tower is located somewhat near the boundary of the airfield.
Will there be a problem? Probably not. Those systems might no9t receive the power level necessary to cause a problem. Remember how many years it took to get them to allow cell phones to be powered up onboard? The FAA is cautious.
Seoul has longer runways. Not a problem in this case.
“The FAA said 5G interference could prevent engine and braking systems from transitioning to landing mode, which could prevent an aircraft from stopping on the runway.”
See my long post. What this tells us is that they know exactly which aircraft systems might have an issue and it is only a risk for short runways with cell towers near them.
5G is being pushed to support the “watch every single thing you do” surveillance state. We have the horse and buggy version of what is coming.
What difference does it make if a few hundred people die!!!
At least all freepers can connect their toilet to the internet. And those microwaves will keep people nice and warm.
I mean we do have priorities here.
787 Safety systems. From the folks that brought us the “737” MAX.
If someone gets gets a 5G phone, they probably need to keep their old phone for use at major airports.
Or use a pay phone ☎️.
Not to worry. It’s only an issue for airports with runways.
Good explanation. Thanks
“Ladies and gentlemen, the pilot has requested all cell phones be turned off so they don’t crash the fricken plane!”
It reads like the 5G is more acting like a "jammer" to the radio altimeter. The altimeter supplies inputs to multiple systems that will engage for a "safe" landing. If the altitude data input is corrupted then that affects the systems that use it.
https://mentourpilot.com/does-the-787-have-a-problem-with-5g-interference/
This is the one and only study used to cost folks (mobile phone companies and others) millions and millions of dollars.
Simulators.
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