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Pull up. At 37,000 feet. That’s the warning... . Terrain ahead. Pull up. There’s no mountain up there. Just cruise. This has been going on more than a year. Plane comes in. GPS 1 fault. GPS 2 fault. ADS-B also. Sometimes the other 1 and 2 faults with it....

49,334 Aufrufe • vor 3 Tagen •via X (Twitter)

21 Kommentare

Profilbild von HeavyJetPilot
HeavyJetPilotvor 3 Tagen

Cruising at FL360 over the Congo forest in the DRC and got the exact same thing on a 737-800—hard EGPWS warnings ("TERRAIN, PULL UP") triggered by spoofed position data.  Fortunately, @Boeing recently published the “GPS Data Unreliable checklist ”to help crew recognize ,manage such issues and transition safely to IRS and conventional radio navigation if required. Stay sharp out there! ✈️ #AvGeek #Boeing737 #PilotLife #Aviation #FlightSafety #GPSSpoofing

Profilbild von Dan The Man
Dan The Manvor 3 Tagen

You’re lucky. Mine kept yelling, “Eject! Eject! Eject!”

Profilbild von Pablo Huerta
Pablo Huertavor 3 Tagen

This happened over cartel controlled territories in northwest Mexico for almost a year. Even MMCL ATIS makes mention of it for their RNP approach

Profilbild von PaulintheSky
PaulintheSkyvor 3 Tagen

Bro flexing like there isn’t a 5 page FCOM procedure to follow to wipe their overpaid ass.

Profilbild von Biff Boatwright
Biff Boatwrightvor 3 Tagen

Last month leaving Germany for Hong Kong we got spoofed over Bucharest. Lost both left and right gps, and never got them back. ANP never exceeded RNP. Just let ATC know and the company. Wrote it up in hkg.

Profilbild von Bitcoin Eagle
Bitcoin Eaglevor 2 Tagen

How isn't air pressure enough to know that there are no mountains?

Profilbild von sail_on_a_surfboard
sail_on_a_surfboardvor 2 Tagen

Not good

Profilbild von Bharath Guru
Bharath Guruvor 2 Tagen

What if flying on night where there is no visibility

Profilbild von Miguel BF-Engine
Miguel BF-Enginevor 2 Tagen

Classic. The box is doing exactly what it was told. EGPWS trusts the GPS position, the GPS lies, so it shouts terrain at FL370. I reset it, sign it, and wait for the next one. LRU comes back clean.

Profilbild von Fred φ BZH
Fred φ BZHvor 2 Tagen

Very weird. As there is no RAD ALT signal (both PFD show STD below ALT Tape), how can the little plastic man shout 'Terrain-Terrain-Terrain' ?? Position is still valid, because the FMS should normally use DME/DME.

Profilbild von Captain Timba 🛫
Captain Timba 🛫vor 3 Tagen

How long do the warnings last?

Profilbild von Fahad Naim
Fahad Naimvor 3 Tagen

Usually just while you’re flying through the interference pocket ...anything from a couple of minutes to 10–15 depending on how wide the jamming area is and your groundspeed. Once you’re clear of it the GPS normally comes back after a reset, though the EGPWS can sometimes hang onto the junk data a bit longer and keep chirping until you cycle the box.

Profilbild von TheVengefulOne
TheVengefulOnevor 2 Tagen

Fly safe 🙏🏾 GPS spoofing is a serious issue.

Profilbild von Adam Pap
Adam Papvor 2 Tagen

Only on Airbus or Boeings also?

Profilbild von AirPirate
AirPiratevor 2 Tagen

Crossing Everest.

Profilbild von 𝗪𝗧𝗙𝗮𝗿𝗲𝘄𝗲𝗱𝗼𝗶𝗻g 🛩️☀️
𝗪𝗧𝗙𝗮𝗿𝗲𝘄𝗲𝗱𝗼𝗶𝗻g 🛩️☀️vor 2 Tagen

I had a similar thing in cruise but it was caused by one of the radalts getting water underneath the bonding. When we had flown through precipitation and then levelled off, ice crystals would push the antenna away from the skin, setting off the pull up. Most annoying.

Profilbild von JPPFREU 🇫🇷🇪🇺🇺🇦
JPPFREU 🇫🇷🇪🇺🇺🇦vor 3 Tagen

Typical to a specific manufacturer or same issue on other aircraft?

Profilbild von harry
harryvor 2 Tagen

Wtf ….at 37k feet up

Profilbild von Don Chevi
Don Chevivor 3 Tagen

It's the sky islands 😔

Profilbild von Richard
Richardvor 2 Tagen

Does this mess up with autopilot or it continues flying straight?

Profilbild von Zusia
Zusiavor 2 Tagen

Thanks for posting the visuals with this. Very informative.

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