#MLAT
Air Force One turned around shortly after take off a few hours ago.

The wiggly track is not the explanation.

Wigglyness comes from AF1 flying without an ADS-B data stream, leaving receivers to do a sort of triangulation, MLAT.

W/o good reception MLAT-tracks look like this.
January 21, 2026 at 6:36 AM
This seems less a proton issue and more a Swiss Justice department issue. I'm not expert but if the MLAT is granted, proton must comply?
March 5, 2026 at 9:05 PM
GPS interference can cause ADS-B-equipped aircraft to send incorrect position data or no data at all. Here’s how we’re using MLAT to counter GPS jamming and spoofing. www.flightradar24.com/blog/aviatio...
June 30, 2025 at 8:42 PM
It is true that Proton is located in Switzerland and responded to a legal request from the Swiss authorities. But it is also true that most people do not know what an MLAT is and there is a widespread misunderstanding that using Proton will protect your account from US govt requests.
You are mistaken, we do not respond to legal requests from anywhere other than the Swiss authorities.

It is unlikely that one could build a business through ignoring the laws of the jurisdiction that it is in. The mail provider you're moving to included.
March 8, 2026 at 4:56 PM
Auta na chodníky, kočárky na mlat. Spolu pro Prahu!
April 26, 2025 at 11:36 AM
Correct...

Also, Proton didn't supply the FBI with anything...the Swiss government did, under an existing Treaty....MLAT, specifically.
March 7, 2026 at 3:10 PM
So yeah. That’s the process. This applies in every one of the 80+ countries where the US is party to an MLAT/MLAA; Proton is not unique here.

The lesson is that foreign jurisdiction is not a replacement for opsec.
March 6, 2026 at 5:34 PM
⚠️📡 A note that this aircraft is tracked via MLAT and may enter and exit coverage at various points during the flight due to its altitude and the position of Flightradar24 receivers. Please see www.flightradar24.com/blog/how-we-... for more information about tracking flights with MLAT.
How We Track Flights with MLAT | Flightradar24 Blog
For these aircraft we've developed our receivers and software to take advantage of Multilateration (MLAT) to help us track their flights.
www.flightradar24.com
February 9, 2025 at 7:37 PM
🎶
Od Strážnice až k nám,
cestička jako mlat,
vydal se tam ten kmán,
kterého pase Chlad…
June 28, 2026 at 8:07 AM
Which is the whole reason why MLAT exists. Lots of countries have cooperation treaties with the US, and Switzerland is one of them. The process for this is fairly simple.

1) Instead of applying to a US court for a US search warrant, the US LEA will submit an MLAT request internally.

3/6
March 8, 2026 at 6:46 PM
Then, the FBI goes through the process of domesticating the subpoena or warrant in Switzerland under the Mutual Legal Assistance Treaty of 1973, commonly known as an MLAT. www.rhf.admin.ch/dam/rhf/en/d...
www.rhf.admin.ch
March 6, 2026 at 5:34 PM
Mlat muck Monday
July 6, 2026 at 7:30 PM
And MLAT means a shit ton of paperwork and verification on the Swiss side, they don't say okeydoke.
March 5, 2026 at 10:58 PM
No ADS-B, so it’s MLAT for this Mirage that looks to be showing its support for Ukraine. 🇺🇦 www.flightradar24.com/2025-06-04/1...
June 4, 2025 at 2:10 PM
Essentially, Proton should never see "legal requests" coming from anywhere other than Swiss authorities. Every other country would simply send their requests via MLAT, which would then be handled by swiss authorities.
5/6
March 8, 2026 at 6:46 PM
Under MLAT? When did we stop?
March 5, 2026 at 11:21 PM
Here is what I think (educated guess): I think there are new receivers for Mode-S in or around Ukraine. This would allow for greater MLAT coverage in the region. And would explain why suddenly we are seeing so many tracks over Ukraine today.
July 12, 2025 at 3:14 AM
The brief also goes all out saying that this order should have been delivered under MLAT or Hague processes. MLAT is normal for cross-border *data disclosure* demands, I've never seen it used for content removal. 9/
February 19, 2025 at 6:20 PM
перед отъездом поселил в Будве пиксельную кошку Фольгу

приходите проведать её, она живёт ближе к концу волнолома

www.openstreetmap.org?mlat=42.2792...

#streetart
March 14, 2024 at 5:40 PM
OK, but this is a different treaty. I get it, but unless we withdraw from MLAT, this is the consequence -- and I don't see us withdrawing from MLAT any time soon.
March 5, 2026 at 11:26 PM
On Friday, I started looking at FR24 data on 59-1444 #AE0361 and noticed there was no observed flights between the arrival 3/02 and the departure 4/10 from Prince Sultan Airbase (OEPS). MLAT coverage isn't the greatest in this region, however other OEPS -135s have been observed.
April 12, 2026 at 4:02 PM
Edward Shone, head of communications for Proton AG, told 404 Media in an email: “We want to first clarify that Proton did not provide any information to the FBI, the information was obtained from the Swiss justice department via MLAT." Functionally, though, the material was provided to the FBI.
Proton Mail Helped FBI Unmask Anonymous ‘Stop Cop City’ Protester
A court record reviewed by 404 Media shows privacy-focused email provider Proton Mail handed over payment data related to a Stop Cop City email account to the Swiss government, which handed it to the ...
www.404media.co
March 5, 2026 at 8:48 PM
SAR Sentinel Tools
giammaiot-app-sar.blogspot.com

ADSB/ACARS/ADSC Heat/Density/pTracks
giammaiot-preview-heatdensity-portals.blogspot.com

MLAT Map-Multi Feeder Network
giammaiot-preview-mlat-multi-portals.blogspot.com

GPS/GNSS Jamming&Spoofing Portals
giammaiot-gps-gnss-multi-portals.blogspot.com
January 22, 2026 at 8:22 AM