auonsson Profile picture
Sep 2 25 tweets 7 min read Read on X
Pilot of the aircraft carrying president von der Leyen experienced GPS issues as they approached Plovdiv airport, Bulgaria Sun Aug 31.

Recordings of tower and plane comms are clear.

Transponder reported good GPS-signal and is likely separate from the instrument pilots used.
Half an hour after first reporting GPS-issues the aircraft of von der Leyen is taxiing on Plovdiv airport as the pilot repeats "we had GPS-issues" and thanks the flight controller for the support.

Full recordings with additional comms available at liveatc.net
From this we can derive that the pilot did *experience* GPS/GNSS-issues.

Given the area and years of jamming it is likely to have been caused by the common jamming of area.

Other explanations are possible.
Some institutions/people yesterday concluded from the ADS-b data that there were no issues with GPS. In my opinion that was a faulty conclusion taken on a very weak basis.
There were likely several receivers on board and the one our pilot looked at seem to have had issues. Or the pilot made a mistake, we cant say for certain with this. The flight data recorder likely can though =)
It is realistically possible it was a directed attack on v d Leyen but to say that we need more data, unlikely to surface but hopefully looked into by Bulgarian services/military.
This thread was modified because it contained a faulty URL to liveatc.net leading to some scam site. Sorry for any harm done. This is a correct url: liveatc.net
"The episode underscores a broader issue: in the race to publish, fact-checking—even on technical matters easily verifiable with public tools—was abandoned. And when agencies like ANP replicate an error, the entire media ecosystem risks amplifying misinformation."
➡️
Quote above is from this excellent article with a timeline of events based on ATC-recordings.
feitoffake.wordpress.com/2025/09/02/how…
Here is the full communication between von der Leyen's aircraft and Plovdiv tower. The full length is 30 mins, I edited away silence, static and some completely other plane speaking unintelligible. You can also find it transcribed in article above.
According to the Bulgarian national news agency the Bulgarian government states that there was 'disappearance of GPS signal' and 'a neutralization of the satellite signal'.

Caveat machine translation, but repeated widely so I find it likely to be a correct translation.
In todays press brief von der Leyen spokesperson @Pinhopau seem to read verbatim and states:

"Here we can only refer to those who have really first hand this information and, as I mentioned, these are notably the Bulgarian Air traffic controllers who issued a statement....
@Pinhopau "according to which, during the European Commission President's flight to Plovdiv, the satellite signal providing data to the aircraft's GPS navigation system was disrupted. While approaching Plovdiv Airport, the GPS signal disappeared....."
@Pinhopau "To ensure flight safety, air traffic control immediately proposed an alternative landing approach using ground based navigation systems. It's the Instrument Landing System.
So this is what we can refer to. It's those who see on the spot what happened exactly."
@Pinhopau I have not been able to locate the original statement that @Pinhopau seem to be reading from.
@Pinhopau But in conclusion: pilot states GPS-issues, Bulgarian government confirms, EU commission confirms.

There are technical and other details not matching but who knows who introduced eg "circled for an hour". That's a question for @FT
@Pinhopau @FT But to say that nothing happened after looking at one, single source (ADS-b data) is quite rich given that authoritative sources, including those who ran the plane are saying something was amiss.
@Pinhopau @FT The plane utilized by VDLeyen used to be owned by Gazprom (2016-22) and is now controlled by a shady Belgian allegedly deeply in bed with Russian oligarchs, known for his fight against corporate transparency.

He started Luxaviation with a former KGB agent in 2008. Sources ➡️
@Pinhopau @FT Belgian Minister of Defense Ludivine Dedonder saw no security issues with leasing the state jets from this bunch back in 2023.

tijd.be/dossiers/de-ve…

occrp.org/en/project/ben…
@Pinhopau @FT Note that jet ownership details has been dug up by other people. They shall be credited and I am also personally not competent enough to fully judge the veracity, read the articles and judge yourself.
@Pinhopau @FT Plane utilized by VDLeyen leaving Moscow for Helsinki, Feb 22 2022, two days ahead of invasion of Ukraine. Not to be seen on the next six months.

Last days a shuttle for von der Leyen as she visits the "front states". adsbexchange.comImage
@Pinhopau @FT Loosely related product page and images for the 'imposibru' types.

rfusion.co.uk/jammer-systemsImage
Image

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with auonsson

auonsson Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @auonsson

Sep 2
Swedish island Gotland is completely without power, for the second time in two weeks.

Gotland is considered paramount to NATO control of Baltic Sea.

As far as I know last outage is still being analyzed and cause is not known.

svt.se/nyheter/lokalt…
Power company now claims lightning strike as cause.

Article linked was updated.
Last hours lightning around Gotland. Image
Read 7 tweets
Sep 1
The plane carrying EU top Ursula von der Leyen was forced to land manually after being hit by GPS/GNSS jamming.

News texts seem to indicate it was directed specifically at Von der Leyen and the airport Plovdiv.

"GPS around airport was knocked out for an hour."
Image
Image
Read 17 tweets
Aug 22
Stockholm-Helsinki ferry SILJA SERENADE made a sharp turn for unknown reasons night between Tu & We. Owner claims weather and collision avoidance. There were damages to loose items.

But there was no other ship on AIS, no sharp turn registered and weather was calm. Image
Calm weather is substantiated by an anonymous maritime professional witness to YLE.

Heavy jamming? Malfunctions? Dark ship in the way? Submarine? Possible explanations are many but the one from the ferry company seem unfinished.

Tnx @akihheikkinen!

yle.fi/a/74-20178772Image
Image
Image
@akihheikkinen Possibly related: last week American special forces exercised close to another ferry on the route.

alandstidningen.ax/nyheter/okanda…

businessinsider.com/swccs-operate-…
Read 5 tweets
Jul 15
Russian destroyer Vice Admiral Kulakov fended of a drone threat Monday in Fehmarn Belt, Baltic Sea, Danish EEZ.

The large ship made evasive maneuvers, employed some anti-drone machine and manned and aimed lighter guns.

All according to local news: archive.is/G5kotImage
DK Navy observed. Thanks anon follower.
As the Russian destroyer made high speed maneuvers with machine guns ready to fire she was surrounded by both commercial and leisure ship traffic.

In her immediate vicinity at most likely incident time were two large tankers and at least 5 sail boats. A few miles of Denmark.
Read 4 tweets
Jul 2
Swedish maritime authority just posted maybe their most extensive interference warning to date.

Even radar is now seeing interference, besides more familiar GNSS, AIS and DGPS.

Radar is the single most important navigational aid on ships, particularly in cases of lost GPS/GNSS. Image
Source:

And on the NAVTEX terminals. navvarn.sjofartsverket.se/Navigationsvar…Image
Read 5 tweets
Jun 29
South Baltic sea is experiencing a newish type of GNSS-jamming. It is affecting units at sea level far and wide, much further than one ground based jammer can reach.

The most intense attack so far took place as the political elite of Denmark and 100k visitors met at Bornholm.
Data for animation above is the signal levels that RINEX stations receive from various GNSS-constellations.
Last year a limited span of frequencies were affected. 2025 all frequencies/bands are affected. BeiDou, not illustrated (noisy).

The Bornholm station is used as example. Image
Image
Looking per station we can see the geographic and temporal reach.

South-east corner of Baltic is affected (but not all stations!) and with an intensified period right now.

It is also evident that the ongoing 2025 attacks result in a much more degraded signal to noise ratio. Image
Image
Read 12 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us!

:(