fliter wrote: ↑Wed Mar 05, 2025 4:35 am
SE7EN wrote: ↑Wed Mar 05, 2025 3:07 am
Justjohn wrote: ↑Tue Mar 04, 2025 3:13 pm
How long until we’re going to work every day using traditional navaids only because the U.S. government selectively shuts off GPS over Canadian airspace in an escalating trade war? Been a long time since I’ve done a DME Arc or the NDB A into anywhere.
How exactly would they do that? The signal only requires a receiver. If they used a jammer it could interfere with their northern states.
Repositioning some satellite orbits a couple of years back placed YHZ on the fringes of WAAS coverage. They can't cut off the service right at the border, but they can definitely significantly reduce accuracy and reliability in large chunks of Canada that are not close to the U.S.
Justjohn wrote: ↑Tue Mar 04, 2025 3:13 pm
Not to mention we could work something out with one of the 4 other GNSS systems like Galileo…
Oh yeah, that'll work just amazing, considering how quick and nimble the industry is when it comes to massive regulatory and technical changes like switching to a completely different GNSS system. /s
Just for reference, our company began updating the FMSs to the latest version, and now our RNP approaches are broken, updates have stopped, and tails that received the updates aren't allowed to fly RNPs anymore. This has been dragging on since December, and will continue for a few more months, no doubt. And that's with the established GNSS system for what should have been a relatively minor operational FMS update... I can just imagine how smoothly and quickly (not!) the switch to Galileo is going to happen!
This one?
https://kteqgeospace.com/gps-anomaly-research-2023/
Yes there would be growing pains like any other change. There are options though.
If Trump leverages the GPS systems we’ll have bigger issues to worry about.
The U.S. has always had the ability to selectively turn off or jam the GPS signal over selective areas. That capability was baked into the system from the start.
Every major airport relies heavily on RNAV SIDS and STARS.
But never mind airspace. I’d imagine every 911 operator would sit up and take notice.
Flying is better than walking. Walking is better than running. Running is better than crawling. All of these however, are better than extraction by a Med-Evac, even if this is technically a form of flying.